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2021-12-13 17:00:40 -06:00
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# Changelog
All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
### [4.2.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v4.2.2...v4.2.3) (2020-10-07)
### Bug Fixes
* better minimizing `mjs` assets ([#329](https://github.com/webpack-contrib/terser-webpack-plugin/issues/329)) ([041b392](https://github.com/webpack-contrib/terser-webpack-plugin/commit/041b39208d364c8af9cd2b3f8e503b05a77ae067))
* minify `cjs` assets ([#328](https://github.com/webpack-contrib/terser-webpack-plugin/issues/328)) ([b9c694d](https://github.com/webpack-contrib/terser-webpack-plugin/commit/b9c694d2c1193438d3ef72fed8d1789d9a48a367))
### [4.2.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v4.2.1...v4.2.2) (2020-09-19)
### Bug Fixes
* related asset info ([a75dc8b](https://github.com/webpack-contrib/terser-webpack-plugin/commit/a75dc8bed97daecc509387a23a72699620695ab2))
### [4.2.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v4.2.0...v4.2.1) (2020-09-15)
### Bug Fixes
* cache for extracted comments ([#314](https://github.com/webpack-contrib/terser-webpack-plugin/issues/314)) ([5340814](https://github.com/webpack-contrib/terser-webpack-plugin/commit/5340814188d53031b0444b8f588995dcbede88fc))
* compatibility with webpack@5 ([f5bd8f8](https://github.com/webpack-contrib/terser-webpack-plugin/commit/f5bd8f8b1c0fc807fd00c57207e449056aeea35d))
## [4.2.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v4.1.0...v4.2.0) (2020-09-11)
### Features
* improve caching ([defde64](https://github.com/webpack-contrib/terser-webpack-plugin/commit/defde640c8a2448fe7a5fee95a516af6e1bba8e4))
* pass the `terserOptions` to the `minify` option ([#311](https://github.com/webpack-contrib/terser-webpack-plugin/issues/311)) ([4bd622c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/4bd622cdaeb51be5d5151925f64ac1054298a214))
### Bug Fixes
* compatibility with webpack@5 ([#301](https://github.com/webpack-contrib/terser-webpack-plugin/issues/301)) ([9d861d8](https://github.com/webpack-contrib/terser-webpack-plugin/commit/9d861d8484eb36fa62c67f03b980cad2a43c3d2a))
## [4.1.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v4.0.0...v4.1.0) (2020-08-10)
### Features
* pass license files as related assets for webpack@5 ([7d3ae95](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7d3ae95bc890a5211efe234301050815ef8e687e))
### Bug Fixes
* compatibility with `10.13` version of `Node.js`
## [4.0.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.1.0...v4.0.0) (2020-08-04)
### ⚠ BREAKING CHANGES
* the `warningsFilter` option was removed without replacement,
* `terser` version is `5`,
* return value of the `minify` option was changed, only `code`/`map`/`extractedComments` are valid
### Features
* improved compatibility with webpack@5
## [3.1.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.8...v3.1.0) (2020-08-03)
### Features
* show minimized assets in stats for webpack@5 ([#289](https://github.com/webpack-contrib/terser-webpack-plugin/issues/289)) ([d59eae2](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d59eae2108ba43f3f7ce6c83195a8438634a9b55))
### Bug Fixes
* compatibility cache feature with webpack@5 ([5d2bd29](https://github.com/webpack-contrib/terser-webpack-plugin/commit/5d2bd29403f614296795664a81e437712469bc05))
* skip double compression for child compilation ([37cc813](https://github.com/webpack-contrib/terser-webpack-plugin/commit/37cc8132df50ad7b374ec2606df1d0e202a579d1))
### [3.0.8](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.7...v3.0.8) (2020-07-27)
### Bug Fixes
* compatibility with child compilations ([9da4add](https://github.com/webpack-contrib/terser-webpack-plugin/commit/9da4add75390a583366b7f030d366c437a52137b))
### [3.0.7](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.6...v3.0.7) (2020-07-16)
### Bug Fixes
* uglify additional assets ([100e38e](https://github.com/webpack-contrib/terser-webpack-plugin/commit/100e38e0db035f6eb21bbec2bbc1f8b12aee9f60))
### [3.0.6](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.5...v3.0.6) (2020-06-18)
### Bug Fixes
* do not crash on buffer assets ([3c67023](https://github.com/webpack-contrib/terser-webpack-plugin/commit/3c670238952ddd5cbbf17f223e13a921f3b76521))
### [3.0.5](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.4...v3.0.5) (2020-06-15)
### Bug Fixes
* multi-compiler crash ([f6499af](https://github.com/webpack-contrib/terser-webpack-plugin/commit/f6499afb40f7a3b434c880d555261d62e0de4fd7))
### [3.0.4](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.3...v3.0.4) (2020-06-13)
### Chore
* update `p-limit` and `serialize-javascript` packages
### [3.0.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.1...v3.0.3) (2020-06-03)
### Bug Fixes
* compatibility with `>= 10.13` versions of Node.js
* security problem ([#259](https://github.com/webpack-contrib/terser-webpack-plugin/issues/259)) ([522aa2c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/522aa2cd4e9c4b508b268eef99572c7c808fe0b6))
### [3.0.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.1...v3.0.2) (2020-05-26)
### Bug Fixes
* compatibility with webpack@5 ([#250](https://github.com/webpack-contrib/terser-webpack-plugin/issues/250)) ([d3ff61c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d3ff61cbb714da8fb6ee1f7659bf6796774ab4cc))
### [3.0.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v3.0.0...v3.0.1) (2020-05-06)
### Bug Fixes
* parallelism in multi compilation mode ([0ee7ed2](https://github.com/webpack-contrib/terser-webpack-plugin/commit/0ee7ed270b8cbf6312cc1009c5aa5f909fc7fbb7))
* remove redundant code for the `chunkFilter` option ([#243](https://github.com/webpack-contrib/terser-webpack-plugin/issues/243)) ([7220734](https://github.com/webpack-contrib/terser-webpack-plugin/commit/722073494ae708e7cd94cdb9df26fb483e93e8de))
## [3.0.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.6...v3.0.0) (2020-05-01)
### ⚠ BREAKING CHANGES
* minimum supported Node.js version is `10.13`
* the `chunkFilter` was removed, please use `test`/`include`/`exclude` options
* change arguments order for the `warningFilter` option from `Function<(warning, file, source) -> Boolean>` to `Function<(file, warning, source) -> Boolean>`
* when the `extractComments.filename` option is a function it pass only one argument and it is object with `filename`, `basename`, `query` and `hash` properties
* if the value from the `extractComments.filename` option conflicts with existing assets, an error will be thrown instead of a warning
* use the `optimizeAssets` hook for webpack@5
### [2.3.6](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.5...v2.3.6) (2020-04-25)
### Bug Fixes
* preserve `@license` comments starting with `//` ([d3f0c81](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d3f0c811672920b658edaa99815de9204716fa21))
### [2.3.5](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.4...v2.3.5) (2020-02-14)
### Bug Fixes
* do not break code with shebang ([fac58cb](https://github.com/webpack-contrib/terser-webpack-plugin/commit/fac58cb1ee7935710b3b38662c3abbf8dc12a862))
### [2.3.4](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.3...v2.3.4) (2020-01-30)
### Bug Fixes
* respect stdout and stderr of workers and do not create warnings ([#215](https://github.com/webpack-contrib/terser-webpack-plugin/issues/215)) ([5708574](https://github.com/webpack-contrib/terser-webpack-plugin/commit/5708574d3337158a02d60a81275467900da5f42d))
* use webpack hash options rather than hard-code MD4 ([#213](https://github.com/webpack-contrib/terser-webpack-plugin/issues/213)) ([330c1f6](https://github.com/webpack-contrib/terser-webpack-plugin/commit/330c1f6cf3468fd6312e86960b272df1591f1a64))
### [2.3.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.2...v2.3.3) (2020-01-28)
### Bug Fixes
* license files now have .txt suffix by default ([#210](https://github.com/webpack-contrib/terser-webpack-plugin/issues/210)) ([de02f7b](https://github.com/webpack-contrib/terser-webpack-plugin/commit/de02f7b229a6ef91baa353681b1c546784672ab6))
* reduce memory usage ([abfd950](https://github.com/webpack-contrib/terser-webpack-plugin/commit/abfd9506207cf392de63a0629de82145efff2361))
### [2.3.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.1...v2.3.2) (2020-01-09)
### Bug Fixes
* show error message from jest-worker ([#203](https://github.com/webpack-contrib/terser-webpack-plugin/issues/203)) ([3b28007](https://github.com/webpack-contrib/terser-webpack-plugin/commit/3b280070cde3b233ae703fe2e0ac75b350cb2da7))
### [2.3.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.3.0...v2.3.1) (2019-12-17)
### Bug Fixes
* performance ([#200](https://github.com/webpack-contrib/terser-webpack-plugin/issues/200)) ([d2acd75](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d2acd75f4b630af38d2c272f800e755fe395b2dd))
## [2.3.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.2.3...v2.3.0) (2019-12-12)
### Features
* support webpack@5 cache ([3649b3d](https://github.com/webpack-contrib/terser-webpack-plugin/commit/3649b3d0bf697288661676b47b33ae88226eb6f5))
### [2.2.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.2.2...v2.2.3) (2019-12-11)
### SECURITY
* update `serialize-javascript` to `2.1.2` version.
### [2.2.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.2.1...v2.2.2) (2019-12-06)
### SECURITY
* update `serialize-javascript` to `2.1.1` version.
### [2.2.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.2.0...v2.2.1) (2019-10-22)
### Bug Fixes
* get rid deprecation warnings for webpack@5 ([#181](https://github.com/webpack-contrib/terser-webpack-plugin/issues/181)) ([0e9b780](https://github.com/webpack-contrib/terser-webpack-plugin/commit/0e9b780390826a9b9f58368f24b39452ca34f00e))
## [2.2.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.1.3...v2.2.0) (2019-10-22)
### Features
* map `webpack@5` options to `terser` options ([#177](https://github.com/webpack-contrib/terser-webpack-plugin/issues/177)) ([f4c47aa](https://github.com/webpack-contrib/terser-webpack-plugin/commit/f4c47aa0e3de27bbab3ae0a90a461841bbce5988))
* pass an asset path for the `warningsFilter` option ([#176](https://github.com/webpack-contrib/terser-webpack-plugin/issues/176)) ([9a0a575](https://github.com/webpack-contrib/terser-webpack-plugin/commit/9a0a575585be21118cb4e3611d30e665a6337c3d))
* propagate an error stacktrace from `terser` ([#179](https://github.com/webpack-contrib/terser-webpack-plugin/issues/179)) ([a11e66b](https://github.com/webpack-contrib/terser-webpack-plugin/commit/a11e66b17ae2bb146ded4e64c948d5eece834378))
* enable the `sourceMap` option when the `SourceMapDevToolPlugin` plugin used (non cheap) ([#178](https://github.com/webpack-contrib/terser-webpack-plugin/issues/178)) ([d01c1b5](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d01c1b5fef7f0593c91c1be3d4eb36220c3f465d))
### Bug Fixes
* get rid deprecation warnings for `webpack@5` ([#180](https://github.com/webpack-contrib/terser-webpack-plugin/issues/180)) ([504ea8b](https://github.com/webpack-contrib/terser-webpack-plugin/commit/504ea8b2017e6fa9b8a5f2123025ee5b7b4d80b1))
### [2.1.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.1.2...v2.1.3) (2019-10-10)
### Bug Fixes
* invalidate cache when a file name was changed ([#171](https://github.com/webpack-contrib/terser-webpack-plugin/issues/171)) ([7e1d370](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7e1d370ce2520c7c23689c19b22cfbea0265957e))
### [2.1.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.1.1...v2.1.2) (2019-09-28)
### Bug Fixes
* regexp for `some` comments ([#168](https://github.com/webpack-contrib/terser-webpack-plugin/issues/168)) ([4c4b1f1](https://github.com/webpack-contrib/terser-webpack-plugin/commit/4c4b1f1))
### [2.1.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.1.0...v2.1.1) (2019-09-27)
### Bug Fixes
* logic for extracting and preserving comments ([#166](https://github.com/webpack-contrib/terser-webpack-plugin/issues/166)) ([6bdee64](https://github.com/webpack-contrib/terser-webpack-plugin/commit/6bdee64))
## [2.1.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.0.1...v2.1.0) (2019-09-16)
### Bug Fixes
* correct interpretation url for extracted comment file ([#157](https://github.com/webpack-contrib/terser-webpack-plugin/issues/157)) ([aba8ba7](https://github.com/webpack-contrib/terser-webpack-plugin/commit/aba8ba7))
### Features
* emit warning when comment file conlict with an existing asset ([#156](https://github.com/webpack-contrib/terser-webpack-plugin/issues/156)) ([2b4d2a4](https://github.com/webpack-contrib/terser-webpack-plugin/commit/2b4d2a4))
* improve naming of extracted file with comments ([#154](https://github.com/webpack-contrib/terser-webpack-plugin/issues/154)) ([5fe3337](https://github.com/webpack-contrib/terser-webpack-plugin/commit/5fe3337))
### [2.0.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v2.0.0...v2.0.1) (2019-09-06)
### Bug Fixes
* reduce memory usage ([#145](https://github.com/webpack-contrib/terser-webpack-plugin/issues/145)) ([815e533](https://github.com/webpack-contrib/terser-webpack-plugin/commit/815e533))
* revert do not run parallel mode when you have only one file ([#146](https://github.com/webpack-contrib/terser-webpack-plugin/issues/146)) ([6613a97](https://github.com/webpack-contrib/terser-webpack-plugin/commit/6613a97))
## [2.0.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.4.1...v2.0.0) (2019-09-05)
### ⚠ BREAKING CHANGES
* minimum require Node.js version is `8.9.0`
* the `extractComments` option is `true` by default
* the `cache` option is `true` by default
* the `parallel` option is `true` by default
* using the `extractComments.condition` option with `true` value extract only `some` comments
* the `sourceMap` option now defaults to depending on the `devtool` Webpack option
### Bug Fixes
* do not run parallel mode when you have only one file ([#134](https://github.com/webpack-contrib/terser-webpack-plugin/issues/134)) ([8b88b39](https://github.com/webpack-contrib/terser-webpack-plugin/commit/8b88b39))
* make `extractComments` API more consistent ([#129](https://github.com/webpack-contrib/terser-webpack-plugin/issues/129)) ([37d2df0](https://github.com/webpack-contrib/terser-webpack-plugin/commit/37d2df0))
* parallel on wsl ([#138](https://github.com/webpack-contrib/terser-webpack-plugin/issues/138)) ([0537591](https://github.com/webpack-contrib/terser-webpack-plugin/commit/0537591))
### Features
* enable the cache option by default ([#132](https://github.com/webpack-contrib/terser-webpack-plugin/issues/132)) ([960d249](https://github.com/webpack-contrib/terser-webpack-plugin/commit/960d249))
* enable the extractComments option by default ([ad2471c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/ad2471c))
* enable the parallel option by default ([#131](https://github.com/webpack-contrib/terser-webpack-plugin/issues/131)) ([7b342af](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7b342af))
* respect `devtool` values for source map generation ([#140](https://github.com/webpack-contrib/terser-webpack-plugin/issues/140)) ([dd37ca1](https://github.com/webpack-contrib/terser-webpack-plugin/commit/dd37ca1))
### [1.4.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.4.0...v1.4.1) (2019-07-31)
### Bug Fixes
* removed unnecessary dependency ([#111](https://github.com/webpack-contrib/terser-webpack-plugin/issues/111)) ([bc19b72](https://github.com/webpack-contrib/terser-webpack-plugin/commit/bc19b72))
## [1.4.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.3.0...v1.4.0) (2019-07-31)
### Features
* generate higher quality SourceMaps ([#109](https://github.com/webpack-contrib/terser-webpack-plugin/issues/109)) ([9d777f0](https://github.com/webpack-contrib/terser-webpack-plugin/commit/9d777f0))
## [1.3.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.4...v1.3.0) (2019-05-24)
### Features
* update terser to 4 version ([#97](https://github.com/webpack-contrib/terser-webpack-plugin/issues/97)) ([15d1595](https://github.com/webpack-contrib/terser-webpack-plugin/commit/15d1595))
### [1.2.4](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.3...v1.2.4) (2019-05-15)
### Bug Fixes
* disable parallel on WSL due bugs ([#90](https://github.com/webpack-contrib/terser-webpack-plugin/issues/90)) ([d9533dd](https://github.com/webpack-contrib/terser-webpack-plugin/commit/d9533dd))
* fallback for cache directory ([#86](https://github.com/webpack-contrib/terser-webpack-plugin/issues/86)) ([3cdd2ed](https://github.com/webpack-contrib/terser-webpack-plugin/commit/3cdd2ed))
<a name="1.2.3"></a>
## [1.2.3](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.2...v1.2.3) (2019-02-25)
### Bug Fixes
* invalidate cache after changing node version ([675edfd](https://github.com/webpack-contrib/terser-webpack-plugin/commit/675edfd))
<a name="1.2.2"></a>
## [1.2.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.1...v1.2.2) (2019-02-04)
### Bug Fixes
* cannot read property 'minify' of undefined ([#69](https://github.com/webpack-contrib/terser-webpack-plugin/issues/69)) ([0593d7c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/0593d7c))
<a name="1.2.1"></a>
## [1.2.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.0...v1.2.1) (2018-12-27)
### Bug Fixes
* don't crash when no extracted comments ([#49](https://github.com/webpack-contrib/terser-webpack-plugin/issues/49)) ([efad586](https://github.com/webpack-contrib/terser-webpack-plugin/commit/efad586))
<a name="1.2.0"></a>
# [1.2.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.1.0...v1.2.0) (2018-12-22)
### Bug Fixes
* `chunks` is a `Set` in webpack@5 ([#19](https://github.com/webpack-contrib/terser-webpack-plugin/issues/19)) ([df8c425](https://github.com/webpack-contrib/terser-webpack-plugin/commit/df8c425))
* catch `work-farm` errors ([#35](https://github.com/webpack-contrib/terser-webpack-plugin/issues/35)) ([2bdcd38](https://github.com/webpack-contrib/terser-webpack-plugin/commit/2bdcd38))
* dedupe extracted comments ([#40](https://github.com/webpack-contrib/terser-webpack-plugin/issues/40)) ([7f4a159](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7f4a159))
* more consistent cache ([#43](https://github.com/webpack-contrib/terser-webpack-plugin/issues/43)) ([36f5f3c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/36f5f3c))
* regenerate `contenthash` when assets was uglified ([#44](https://github.com/webpack-contrib/terser-webpack-plugin/issues/44)) ([7e6f8b1](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7e6f8b1))
### Features
* `chunkFilter` option for filtering chunks ([#38](https://github.com/webpack-contrib/terser-webpack-plugin/issues/38)) ([7ffe57c](https://github.com/webpack-contrib/terser-webpack-plugin/commit/7ffe57c))
* uglify `mjs` by default ([#39](https://github.com/webpack-contrib/terser-webpack-plugin/issues/39)) ([1644620](https://github.com/webpack-contrib/terser-webpack-plugin/commit/1644620))
<a name="1.1.0"></a>
# [1.1.0](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.0.1...v1.1.0) (2018-09-14)
### Bug Fixes
* extract comment conditions is case insensitivity ([19e1e43](https://github.com/webpack-contrib/terser-webpack-plugin/commit/19e1e43))
### Features
* full coverage schema options validation ([#8](https://github.com/webpack-contrib/terser-webpack-plugin/issues/8)) ([68e531e](https://github.com/webpack-contrib/terser-webpack-plugin/commit/68e531e))
<a name="1.0.2"></a>
## [1.0.2](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.0.1...v1.0.2) (2018-08-16)
### Internal
* migrate from `@webpack-contrib/schema-utils` to `schema-utils` ([a5432da](https://github.com/webpack-contrib/terser-webpack-plugin/commit/a5432da))
<a name="1.0.1"></a>
## [1.0.1](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.0.0...v1.0.1) (2018-08-15)
### Bug Fixes
* `cpus` length in a chroot environment (`os.cpus()`) ([#4](https://github.com/webpack-contrib/terser-webpack-plugin/issues/4)) ([9375646](https://github.com/webpack-contrib/terser-webpack-plugin/commit/9375646))
<a name="1.0.0"></a>
# 1.0.0 (2018-08-02)
Initial publish release
# Change Log
All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.

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Copyright JS Foundation and other contributors
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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<div align="center">
<a href="https://github.com/webpack/webpack">
<img width="200" height="200" src="https://webpack.js.org/assets/icon-square-big.svg">
</a>
</div>
[![npm][npm]][npm-url]
[![node][node]][node-url]
[![deps][deps]][deps-url]
[![tests][tests]][tests-url]
[![cover][cover]][cover-url]
[![chat][chat]][chat-url]
[![size][size]][size-url]
# terser-webpack-plugin
This plugin uses [terser](https://github.com/terser-js/terser) to minify your JavaScript.
## Getting Started
To begin, you'll need to install `terser-webpack-plugin`:
```console
$ npm install terser-webpack-plugin --save-dev
```
Then add the plugin to your `webpack` config. For example:
**webpack.config.js**
```js
const TerserPlugin = require('terser-webpack-plugin');
module.exports = {
optimization: {
minimize: true,
minimizer: [new TerserPlugin()],
},
};
```
And run `webpack` via your preferred method.
## Options
### `test`
Type: `String|RegExp|Array<String|RegExp>`
Default: `/\.m?js(\?.*)?$/i`
Test to match files against.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
test: /\.js(\?.*)?$/i,
}),
],
},
};
```
### `include`
Type: `String|RegExp|Array<String|RegExp>`
Default: `undefined`
Files to include.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
include: /\/includes/,
}),
],
},
};
```
### `exclude`
Type: `String|RegExp|Array<String|RegExp>`
Default: `undefined`
Files to exclude.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
exclude: /\/excludes/,
}),
],
},
};
```
### `cache`
> ⚠ Ignored in webpack 5! Please use https://webpack.js.org/configuration/other-options/#cache.
Type: `Boolean|String`
Default: `true`
Enable file caching.
Default path to cache directory: `node_modules/.cache/terser-webpack-plugin`.
> ℹ️ If you use your own `minify` function please read the `minify` section for cache invalidation correctly.
#### `Boolean`
Enable/disable file caching.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
cache: true,
}),
],
},
};
```
#### `String`
Enable file caching and set path to cache directory.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
cache: 'path/to/cache',
}),
],
},
};
```
### `cacheKeys`
> ⚠ Ignored in webpack 5! Please use https://webpack.js.org/configuration/other-options/#cache.
Type: `Function<(defaultCacheKeys, file) -> Object>`
Default: `defaultCacheKeys => defaultCacheKeys`
Allows you to override default cache keys.
Default cache keys:
```js
({
terser: require('terser/package.json').version, // terser version
'terser-webpack-plugin': require('../package.json').version, // plugin version
'terser-webpack-plugin-options': this.options, // plugin options
nodeVersion: process.version, // Node.js version
name: file, // asset path
contentHash: crypto.createHash('md4').update(input).digest('hex'), // source file hash
});
```
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
cache: true,
cacheKeys: (defaultCacheKeys, file) => {
defaultCacheKeys.myCacheKey = 'myCacheKeyValue';
return defaultCacheKeys;
},
}),
],
},
};
```
### `parallel`
Type: `Boolean|Number`
Default: `true`
Use multi-process parallel running to improve the build speed.
Default number of concurrent runs: `os.cpus().length - 1`.
> ℹ️ Parallelization can speedup your build significantly and is therefore **highly recommended**.
> ⚠️ If you use **Circle CI** or any other environment that doesn't provide real available count of CPUs then you need to setup explicitly number of CPUs to avoid `Error: Call retries were exceeded` (see [#143](https://github.com/webpack-contrib/terser-webpack-plugin/issues/143), [#202](https://github.com/webpack-contrib/terser-webpack-plugin/issues/202)).
#### `Boolean`
Enable/disable multi-process parallel running.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
parallel: true,
}),
],
},
};
```
#### `Number`
Enable multi-process parallel running and set number of concurrent runs.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
parallel: 4,
}),
],
},
};
```
### `sourceMap`
Type: `Boolean`
Default: `false` (see below for details around `devtool` value and `SourceMapDevToolPlugin` plugin)
**Works only with `source-map`, `inline-source-map`, `hidden-source-map` and `nosources-source-map` values for the [`devtool`](https://webpack.js.org/configuration/devtool/) option.**
Why?
- `eval` wraps modules in `eval("string")` and the minimizer does not handle strings.
- `cheap` has not column information and minimizer generate only a single line, which leave only a single mapping.
The plugin respect the [`devtool`](https://webpack.js.org/configuration/devtool/) and using the `SourceMapDevToolPlugin` plugin.
Using supported `devtool` values enable source map generation.
Using `SourceMapDevToolPlugin` with enabled the `columns` option enables source map generation.
Use source maps to map error message locations to modules (this slows down the compilation).
If you use your own `minify` function please read the `minify` section for handling source maps correctly.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
sourceMap: true,
}),
],
},
};
```
### `minify`
Type: `Function`
Default: `undefined`
Allows you to override default minify function.
By default plugin uses [terser](https://github.com/terser-js/terser) package.
Useful for using and testing unpublished versions or forks.
> ⚠️ **Always use `require` inside `minify` function when `parallel` option enabled**.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
terserOptions: {
myCustomOption: true,
},
// Can be async
minify: (file, sourceMap, minimizerOptions) => {
// The `minimizerOptions` option contains option from the `terserOptions` option
// You can use `minimizerOptions.myCustomOption`
const extractedComments = [];
// Custom logic for extract comments
const { map, code } = require('uglify-module') // Or require('./path/to/uglify-module')
.minify(file, {
/* Your options for minification */
});
return { map, code, extractedComments };
},
}),
],
},
};
```
### `terserOptions`
Type: `Object`
Default: [default](https://github.com/terser-js/terser#minify-options)
Terser minify [options](https://github.com/terser-js/terser#minify-options).
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
terserOptions: {
ecma: undefined,
parse: {},
compress: {},
mangle: true, // Note `mangle.properties` is `false` by default.
module: false,
output: null,
toplevel: false,
nameCache: null,
ie8: false,
keep_classnames: undefined,
keep_fnames: false,
safari10: false,
},
}),
],
},
};
```
### `extractComments`
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>|Object`
Default: `true`
Whether comments shall be extracted to a separate file, (see [details](https://github.com/webpack/webpack/commit/71933e979e51c533b432658d5e37917f9e71595a)).
By default extract only comments using `/^\**!|@preserve|@license|@cc_on/i` regexp condition and remove remaining comments.
If the original file is named `foo.js`, then the comments will be stored to `foo.js.LICENSE.txt`.
The `terserOptions.output.comments` option specifies whether the comment will be preserved, i.e. it is possible to preserve some comments (e.g. annotations) while extracting others or even preserving comments that have been extracted.
#### `Boolean`
Enable/disable extracting comments.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: true,
}),
],
},
};
```
#### `String`
Extract `all` or `some` (use `/^\**!|@preserve|@license|@cc_on/i` RegExp) comments.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: 'all',
}),
],
},
};
```
#### `RegExp`
All comments that match the given expression will be extracted to the separate file.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: /@extract/i,
}),
],
},
};
```
#### `Function<(node, comment) -> Boolean>`
All comments that match the given expression will be extracted to the separate file.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: (astNode, comment) => {
if (/@extract/i.test(comment.value)) {
return true;
}
return false;
},
}),
],
},
};
```
#### `Object`
Allow to customize condition for extract comments, specify extracted file name and banner.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: {
condition: /^\**!|@preserve|@license|@cc_on/i,
filename: (fileData) => {
// The "fileData" argument contains object with "filename", "basename", "query" and "hash"
return `${fileData.filename}.LICENSE.txt${fileData.query}`;
},
banner: (licenseFile) => {
return `License information can be found in ${licenseFile}`;
},
},
}),
],
},
};
```
##### `condition`
Type: `Boolean|String|RegExp|Function<(node, comment) -> Boolean|Object>`
Condition what comments you need extract.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: {
condition: 'some',
filename: (fileData) => {
// The "fileData" argument contains object with "filename", "basename", "query" and "hash"
return `${fileData.filename}.LICENSE.txt${fileData.query}`;
},
banner: (licenseFile) => {
return `License information can be found in ${licenseFile}`;
},
},
}),
],
},
};
```
##### `filename`
Type: `String|Function<(string) -> String>`
Default: `[file].LICENSE.txt[query]`
Available placeholders: `[file]`, `[query]` and `[filebase]` (`[base]` for webpack 5).
The file where the extracted comments will be stored.
Default is to append the suffix `.LICENSE.txt` to the original filename.
> ⚠️ We highly recommend using the `txt` extension. Using `js`/`cjs`/`mjs` extensions may conflict with existing assets which leads to broken code.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: {
condition: /^\**!|@preserve|@license|@cc_on/i,
filename: 'extracted-comments.js',
banner: (licenseFile) => {
return `License information can be found in ${licenseFile}`;
},
},
}),
],
},
};
```
##### `banner`
Type: `Boolean|String|Function<(string) -> String>`
Default: `/*! For license information please see ${commentsFile} */`
The banner text that points to the extracted file and will be added on top of the original file.
Can be `false` (no banner), a `String`, or a `Function<(string) -> String>` that will be called with the filename where extracted comments have been stored.
Will be wrapped into comment.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
extractComments: {
condition: true,
filename: (fileData) => {
// The "fileData" argument contains object with "filename", "basename", "query" and "hash"
return `${fileData.filename}.LICENSE.txt${fileData.query}`;
},
banner: (commentsFile) => {
return `My custom banner about license information ${commentsFile}`;
},
},
}),
],
},
};
```
## Examples
### Preserve Comments
Extract all legal comments (i.e. `/^\**!|@preserve|@license|@cc_on/i`) and preserve `/@license/i` comments.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
terserOptions: {
output: {
comments: /@license/i,
},
},
extractComments: true,
}),
],
},
};
```
### Remove Comments
If you avoid building with comments, use this config:
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
terserOptions: {
output: {
comments: false,
},
},
extractComments: false,
}),
],
},
};
```
### Custom Minify Function
Override default minify function - use `uglify-js` for minification.
**webpack.config.js**
```js
module.exports = {
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
// Uncomment lines below for cache invalidation correctly
// cache: true,
// cacheKeys: (defaultCacheKeys) => {
// delete defaultCacheKeys.terser;
//
// return Object.assign(
// {},
// defaultCacheKeys,
// { 'uglify-js': require('uglify-js/package.json').version },
// );
// },
minify: (file, sourceMap) => {
// https://github.com/mishoo/UglifyJS2#minify-options
const uglifyJsOptions = {
/* your `uglify-js` package options */
};
if (sourceMap) {
uglifyJsOptions.sourceMap = {
content: sourceMap,
};
}
return require('uglify-js').minify(file, uglifyJsOptions);
},
}),
],
},
};
```
## Contributing
Please take a moment to read our contributing guidelines if you haven't yet done so.
[CONTRIBUTING](./.github/CONTRIBUTING.md)
## License
[MIT](./LICENSE)
[npm]: https://img.shields.io/npm/v/terser-webpack-plugin.svg
[npm-url]: https://npmjs.com/package/terser-webpack-plugin
[node]: https://img.shields.io/node/v/terser-webpack-plugin.svg
[node-url]: https://nodejs.org
[deps]: https://david-dm.org/webpack-contrib/terser-webpack-plugin.svg
[deps-url]: https://david-dm.org/webpack-contrib/terser-webpack-plugin
[tests]: https://github.com/webpack-contrib/terser-webpack-plugin/workflows/terser-webpack-plugin/badge.svg
[tests-url]: https://github.com/webpack-contrib/terser-webpack-plugin/actions
[cover]: https://codecov.io/gh/webpack-contrib/terser-webpack-plugin/branch/master/graph/badge.svg
[cover-url]: https://codecov.io/gh/webpack-contrib/terser-webpack-plugin
[chat]: https://img.shields.io/badge/gitter-webpack%2Fwebpack-brightgreen.svg
[chat-url]: https://gitter.im/webpack/webpack
[size]: https://packagephobia.now.sh/badge?p=terser-webpack-plugin
[size-url]: https://packagephobia.now.sh/result?p=terser-webpack-plugin

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _os = _interopRequireDefault(require("os"));
var _cacache = _interopRequireDefault(require("cacache"));
var _findCacheDir = _interopRequireDefault(require("find-cache-dir"));
var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
class Webpack4Cache {
constructor(compilation, options, weakCache) {
this.cache = options.cache === true ? Webpack4Cache.getCacheDirectory() : options.cache;
this.weakCache = weakCache;
}
static getCacheDirectory() {
return (0, _findCacheDir.default)({
name: 'terser-webpack-plugin'
}) || _os.default.tmpdir();
}
async get(cacheData, {
RawSource,
ConcatSource,
SourceMapSource
}) {
if (!this.cache) {
// eslint-disable-next-line no-undefined
return undefined;
}
const weakOutput = this.weakCache.get(cacheData.inputSource);
if (weakOutput) {
return weakOutput;
} // eslint-disable-next-line no-param-reassign
cacheData.cacheIdent = cacheData.cacheIdent || (0, _serializeJavascript.default)(cacheData.cacheKeys);
let cachedResult;
try {
cachedResult = await _cacache.default.get(this.cache, cacheData.cacheIdent);
} catch (ignoreError) {
// eslint-disable-next-line no-undefined
return undefined;
}
cachedResult = JSON.parse(cachedResult.data);
if (cachedResult.target === 'comments') {
return new ConcatSource(cachedResult.value);
}
const {
code,
name,
map,
input,
inputSourceMap,
extractedComments,
banner,
shebang
} = cachedResult;
if (map) {
cachedResult.source = new SourceMapSource(code, name, map, input, inputSourceMap, true);
} else {
cachedResult.source = new RawSource(code);
}
if (banner) {
cachedResult.source = new ConcatSource(shebang ? `${shebang}\n` : '', `/*! ${banner} */\n`, cachedResult.source);
}
if (extractedComments) {
cachedResult.extractedCommentsSource = new RawSource(extractedComments);
}
return cachedResult;
}
async store(cacheData) {
if (!this.cache) {
// eslint-disable-next-line no-undefined
return undefined;
}
if (!this.weakCache.has(cacheData.inputSource)) {
if (cacheData.target === 'comments') {
this.weakCache.set(cacheData.inputSource, cacheData.output);
} else {
this.weakCache.set(cacheData.inputSource, cacheData);
}
}
let data;
if (cacheData.target === 'comments') {
data = {
target: cacheData.target,
value: cacheData.output.source()
};
} else {
data = {
code: cacheData.code,
name: cacheData.name,
map: cacheData.map,
input: cacheData.input,
inputSourceMap: cacheData.inputSourceMap,
banner: cacheData.banner,
shebang: cacheData.shebang
};
if (cacheData.extractedCommentsSource) {
data.extractedComments = cacheData.extractedCommentsSource.source();
data.commentsFilename = cacheData.commentsFilename;
}
}
return _cacache.default.put(this.cache, cacheData.cacheIdent, JSON.stringify(data));
}
}
exports.default = Webpack4Cache;

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
class Cache {
constructor(compilation) {
this.cache = compilation.getCache('TerserWebpackPlugin');
}
async get(cacheData) {
// eslint-disable-next-line no-param-reassign
cacheData.eTag = cacheData.eTag || Array.isArray(cacheData.inputSource) ? cacheData.inputSource.map(item => this.cache.getLazyHashedEtag(item)).reduce((previousValue, currentValue) => this.cache.mergeEtags(previousValue, currentValue)) : this.cache.getLazyHashedEtag(cacheData.inputSource);
return this.cache.getPromise(cacheData.name, cacheData.eTag);
}
async store(cacheData) {
let data;
if (cacheData.target === 'comments') {
data = cacheData.output;
} else {
data = {
source: cacheData.source,
extractedCommentsSource: cacheData.extractedCommentsSource,
commentsFilename: cacheData.commentsFilename
};
}
return this.cache.storePromise(cacheData.name, cacheData.eTag, data);
}
}
exports.default = Cache;

5
node_modules/terser-webpack-plugin/dist/cjs.js generated vendored Normal file
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"use strict";
const plugin = require('./index');
module.exports = plugin.default;

594
node_modules/terser-webpack-plugin/dist/index.js generated vendored Normal file
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _path = _interopRequireDefault(require("path"));
var _os = _interopRequireDefault(require("os"));
var _sourceMap = require("source-map");
var _webpack = _interopRequireWildcard(require("webpack"));
var _RequestShortener = _interopRequireDefault(require("webpack/lib/RequestShortener"));
var _schemaUtils = require("schema-utils");
var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
var _package = _interopRequireDefault(require("terser/package.json"));
var _pLimit = _interopRequireDefault(require("p-limit"));
var _jestWorker = _interopRequireDefault(require("jest-worker"));
var _options = _interopRequireDefault(require("./options.json"));
var _minify = require("./minify");
function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// webpack 5 exposes the sources property to ensure the right version of webpack-sources is used
const {
SourceMapSource,
RawSource,
ConcatSource
} = // eslint-disable-next-line global-require
_webpack.default.sources || require('webpack-sources');
class TerserPlugin {
constructor(options = {}) {
(0, _schemaUtils.validate)(_options.default, options, {
name: 'Terser Plugin',
baseDataPath: 'options'
});
const {
minify,
terserOptions = {},
test = /\.[cm]?js(\?.*)?$/i,
extractComments = true,
sourceMap,
cache = true,
cacheKeys = defaultCacheKeys => defaultCacheKeys,
parallel = true,
include,
exclude
} = options;
this.options = {
test,
extractComments,
sourceMap,
cache,
cacheKeys,
parallel,
include,
exclude,
minify,
terserOptions
};
}
static isSourceMap(input) {
// All required options for `new SourceMapConsumer(...options)`
// https://github.com/mozilla/source-map#new-sourcemapconsumerrawsourcemap
return Boolean(input && input.version && input.sources && Array.isArray(input.sources) && typeof input.mappings === 'string');
}
static buildError(error, file, sourceMap, requestShortener) {
if (error.line) {
const original = sourceMap && sourceMap.originalPositionFor({
line: error.line,
column: error.col
});
if (original && original.source && requestShortener) {
return new Error(`${file} from Terser\n${error.message} [${requestShortener.shorten(original.source)}:${original.line},${original.column}][${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split('\n').slice(1).join('\n')}` : ''}`);
}
return new Error(`${file} from Terser\n${error.message} [${file}:${error.line},${error.col}]${error.stack ? `\n${error.stack.split('\n').slice(1).join('\n')}` : ''}`);
}
if (error.stack) {
return new Error(`${file} from Terser\n${error.stack}`);
}
return new Error(`${file} from Terser\n${error.message}`);
}
static isWebpack4() {
return _webpack.version[0] === '4';
}
static getAvailableNumberOfCores(parallel) {
// In some cases cpus() returns undefined
// https://github.com/nodejs/node/issues/19022
const cpus = _os.default.cpus() || {
length: 1
};
return parallel === true ? cpus.length - 1 : Math.min(Number(parallel) || 0, cpus.length - 1);
} // eslint-disable-next-line consistent-return
static getAsset(compilation, name) {
// New API
if (compilation.getAsset) {
return compilation.getAsset(name);
}
/* istanbul ignore next */
if (compilation.assets[name]) {
return {
name,
source: compilation.assets[name],
info: {}
};
}
}
static emitAsset(compilation, name, source, assetInfo) {
// New API
if (compilation.emitAsset) {
compilation.emitAsset(name, source, assetInfo);
} // eslint-disable-next-line no-param-reassign
compilation.assets[name] = source;
}
static updateAsset(compilation, name, newSource, assetInfo) {
// New API
if (compilation.updateAsset) {
compilation.updateAsset(name, newSource, assetInfo);
} // eslint-disable-next-line no-param-reassign
compilation.assets[name] = newSource;
}
async optimize(compiler, compilation, assets, CacheEngine, weakCache) {
let assetNames;
if (TerserPlugin.isWebpack4()) {
assetNames = [].concat(Array.from(compilation.additionalChunkAssets || [])).concat( // In webpack@4 it is `chunks`
Array.from(assets).reduce((acc, chunk) => acc.concat(Array.from(chunk.files || [])), [])).concat(Object.keys(compilation.assets)).filter((assetName, index, existingAssets) => existingAssets.indexOf(assetName) === index).filter(assetName => _webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
undefined, this.options)(assetName));
} else {
assetNames = Object.keys(assets).filter(assetName => _webpack.ModuleFilenameHelpers.matchObject.bind( // eslint-disable-next-line no-undefined
undefined, this.options)(assetName));
}
if (assetNames.length === 0) {
return;
}
const availableNumberOfCores = TerserPlugin.getAvailableNumberOfCores(this.options.parallel);
let concurrency = Infinity;
let worker;
if (availableNumberOfCores > 0) {
// Do not create unnecessary workers when the number of files is less than the available cores, it saves memory
const numWorkers = Math.min(assetNames.length, availableNumberOfCores);
concurrency = numWorkers;
worker = new _jestWorker.default(require.resolve('./minify'), {
numWorkers
}); // https://github.com/facebook/jest/issues/8872#issuecomment-524822081
const workerStdout = worker.getStdout();
if (workerStdout) {
workerStdout.on('data', chunk => {
return process.stdout.write(chunk);
});
}
const workerStderr = worker.getStderr();
if (workerStderr) {
workerStderr.on('data', chunk => {
return process.stderr.write(chunk);
});
}
}
const limit = (0, _pLimit.default)(concurrency);
const cache = new CacheEngine(compilation, {
cache: this.options.cache
}, weakCache);
const allExtractedComments = new Map();
const scheduledTasks = [];
for (const name of assetNames) {
scheduledTasks.push(limit(async () => {
const {
info,
source: inputSource
} = TerserPlugin.getAsset(compilation, name); // Skip double minimize assets from child compilation
if (info.minimized) {
return;
}
let input;
let inputSourceMap; // TODO refactor after drop webpack@4, webpack@5 always has `sourceAndMap` on sources
if (this.options.sourceMap && inputSource.sourceAndMap) {
const {
source,
map
} = inputSource.sourceAndMap();
input = source;
if (map) {
if (TerserPlugin.isSourceMap(map)) {
inputSourceMap = map;
} else {
inputSourceMap = map;
compilation.warnings.push(new Error(`${name} contains invalid source map`));
}
}
} else {
input = inputSource.source();
inputSourceMap = null;
}
if (Buffer.isBuffer(input)) {
input = input.toString();
}
const cacheData = {
name,
inputSource
};
if (TerserPlugin.isWebpack4()) {
if (this.options.cache) {
const {
outputOptions: {
hashSalt,
hashDigest,
hashDigestLength,
hashFunction
}
} = compilation;
const hash = _webpack.util.createHash(hashFunction);
if (hashSalt) {
hash.update(hashSalt);
}
hash.update(input);
const digest = hash.digest(hashDigest);
cacheData.input = input;
cacheData.inputSourceMap = inputSourceMap;
cacheData.cacheKeys = this.options.cacheKeys({
terser: _package.default.version,
// eslint-disable-next-line global-require
'terser-webpack-plugin': require('../package.json').version,
'terser-webpack-plugin-options': this.options,
name,
contentHash: digest.substr(0, hashDigestLength)
}, name);
}
}
let output = await cache.get(cacheData, {
RawSource,
ConcatSource,
SourceMapSource
});
if (!output) {
const minimizerOptions = {
name,
input,
inputSourceMap,
minify: this.options.minify,
minimizerOptions: this.options.terserOptions,
extractComments: this.options.extractComments
};
if (/\.mjs(\?.*)?$/i.test(name)) {
this.options.terserOptions.module = true;
}
try {
output = await (worker ? worker.transform((0, _serializeJavascript.default)(minimizerOptions)) : (0, _minify.minify)(minimizerOptions));
} catch (error) {
compilation.errors.push(TerserPlugin.buildError(error, name, inputSourceMap && TerserPlugin.isSourceMap(inputSourceMap) ? new _sourceMap.SourceMapConsumer(inputSourceMap) : null, new _RequestShortener.default(compiler.context)));
return;
}
let shebang;
if (this.options.extractComments.banner !== false && output.extractedComments && output.extractedComments.length > 0 && output.code.startsWith('#!')) {
const firstNewlinePosition = output.code.indexOf('\n');
shebang = output.code.substring(0, firstNewlinePosition);
output.code = output.code.substring(firstNewlinePosition + 1);
}
if (output.map) {
output.source = new SourceMapSource(output.code, name, output.map, input, inputSourceMap, true);
} else {
output.source = new RawSource(output.code);
}
let commentsFilename;
if (output.extractedComments && output.extractedComments.length > 0) {
commentsFilename = this.options.extractComments.filename || '[file].LICENSE.txt[query]';
let query = '';
let filename = name;
const querySplit = filename.indexOf('?');
if (querySplit >= 0) {
query = filename.substr(querySplit);
filename = filename.substr(0, querySplit);
}
const lastSlashIndex = filename.lastIndexOf('/');
const basename = lastSlashIndex === -1 ? filename : filename.substr(lastSlashIndex + 1);
const data = {
filename,
basename,
query
};
commentsFilename = compilation.getPath(commentsFilename, data);
output.commentsFilename = commentsFilename;
let banner; // Add a banner to the original file
if (this.options.extractComments.banner !== false) {
banner = this.options.extractComments.banner || `For license information please see ${_path.default.relative(_path.default.dirname(name), commentsFilename).replace(/\\/g, '/')}`;
if (typeof banner === 'function') {
banner = banner(commentsFilename);
}
if (banner) {
output.source = new ConcatSource(shebang ? `${shebang}\n` : '', `/*! ${banner} */\n`, output.source);
output.banner = banner;
output.shebang = shebang;
}
}
const extractedCommentsString = output.extractedComments.sort().join('\n\n');
output.extractedCommentsSource = new RawSource(`${extractedCommentsString}\n`);
}
await cache.store({ ...output,
...cacheData
});
} // TODO `...` required only for webpack@4
const newInfo = { ...info,
minimized: true
};
const {
source,
extractedCommentsSource
} = output; // Write extracted comments to commentsFilename
if (extractedCommentsSource) {
const {
commentsFilename
} = output; // TODO `...` required only for webpack@4
newInfo.related = {
license: commentsFilename,
...info.related
};
allExtractedComments.set(name, {
extractedCommentsSource,
commentsFilename
});
}
TerserPlugin.updateAsset(compilation, name, source, newInfo);
}));
}
await Promise.all(scheduledTasks);
if (worker) {
await worker.end();
}
await Array.from(allExtractedComments).sort().reduce(async (previousPromise, [from, value]) => {
const previous = await previousPromise;
const {
commentsFilename,
extractedCommentsSource
} = value;
if (previous && previous.commentsFilename === commentsFilename) {
const {
from: previousFrom,
source: prevSource
} = previous;
const mergedName = `${previousFrom}|${from}`;
const cacheData = {
target: 'comments'
};
if (TerserPlugin.isWebpack4()) {
const {
outputOptions: {
hashSalt,
hashDigest,
hashDigestLength,
hashFunction
}
} = compilation;
const previousHash = _webpack.util.createHash(hashFunction);
const hash = _webpack.util.createHash(hashFunction);
if (hashSalt) {
previousHash.update(hashSalt);
hash.update(hashSalt);
}
previousHash.update(prevSource.source());
hash.update(extractedCommentsSource.source());
const previousDigest = previousHash.digest(hashDigest);
const digest = hash.digest(hashDigest);
cacheData.cacheKeys = {
mergedName,
previousContentHash: previousDigest.substr(0, hashDigestLength),
contentHash: digest.substr(0, hashDigestLength)
};
cacheData.inputSource = extractedCommentsSource;
} else {
const mergedInputSource = [prevSource, extractedCommentsSource];
cacheData.name = `${commentsFilename}|${mergedName}`;
cacheData.inputSource = mergedInputSource;
}
let output = await cache.get(cacheData, {
ConcatSource
});
if (!output) {
output = new ConcatSource(Array.from(new Set([...prevSource.source().split('\n\n'), ...extractedCommentsSource.source().split('\n\n')])).join('\n\n'));
await cache.store({ ...cacheData,
output
});
}
TerserPlugin.updateAsset(compilation, commentsFilename, output);
return {
commentsFilename,
from: mergedName,
source: output
};
}
const existingAsset = TerserPlugin.getAsset(compilation, commentsFilename);
if (existingAsset) {
return {
commentsFilename,
from: commentsFilename,
source: existingAsset.source
};
}
TerserPlugin.emitAsset(compilation, commentsFilename, extractedCommentsSource);
return {
commentsFilename,
from,
source: extractedCommentsSource
};
}, Promise.resolve());
}
static getEcmaVersion(environment) {
// ES 6th
if (environment.arrowFunction || environment.const || environment.destructuring || environment.forOf || environment.module) {
return 2015;
} // ES 11th
if (environment.bigIntLiteral || environment.dynamicImport) {
return 2020;
}
return 5;
}
apply(compiler) {
const {
devtool,
output,
plugins
} = compiler.options;
this.options.sourceMap = typeof this.options.sourceMap === 'undefined' ? devtool && !devtool.includes('eval') && !devtool.includes('cheap') && (devtool.includes('source-map') || // Todo remove when `webpack@4` support will be dropped
devtool.includes('sourcemap')) || plugins && plugins.some(plugin => plugin instanceof _webpack.SourceMapDevToolPlugin && plugin.options && plugin.options.columns) : Boolean(this.options.sourceMap);
if (typeof this.options.terserOptions.module === 'undefined' && typeof output.module !== 'undefined') {
this.options.terserOptions.module = output.module;
}
if (typeof this.options.terserOptions.ecma === 'undefined') {
this.options.terserOptions.ecma = TerserPlugin.getEcmaVersion(output.environment || {});
}
const pluginName = this.constructor.name;
const weakCache = TerserPlugin.isWebpack4() && (this.options.cache === true || typeof this.options.cache === 'string') ? new WeakMap() : // eslint-disable-next-line no-undefined
undefined;
compiler.hooks.compilation.tap(pluginName, compilation => {
if (this.options.sourceMap) {
compilation.hooks.buildModule.tap(pluginName, moduleArg => {
// to get detailed location info about errors
// eslint-disable-next-line no-param-reassign
moduleArg.useSourceMap = true;
});
}
if (TerserPlugin.isWebpack4()) {
// eslint-disable-next-line global-require
const CacheEngine = require('./Webpack4Cache').default;
const {
mainTemplate,
chunkTemplate
} = compilation;
const data = (0, _serializeJavascript.default)({
terser: _package.default.version,
terserOptions: this.options.terserOptions
}); // Regenerate `contenthash` for minified assets
for (const template of [mainTemplate, chunkTemplate]) {
template.hooks.hashForChunk.tap(pluginName, hash => {
hash.update('TerserPlugin');
hash.update(data);
});
}
compilation.hooks.optimizeChunkAssets.tapPromise(pluginName, assets => this.optimize(compiler, compilation, assets, CacheEngine, weakCache));
} else {
// eslint-disable-next-line global-require
const CacheEngine = require('./Webpack5Cache').default; // eslint-disable-next-line global-require
const Compilation = require('webpack/lib/Compilation');
const hooks = _webpack.javascript.JavascriptModulesPlugin.getCompilationHooks(compilation);
const data = (0, _serializeJavascript.default)({
terser: _package.default.version,
terserOptions: this.options.terserOptions
});
hooks.chunkHash.tap(pluginName, (chunk, hash) => {
hash.update('TerserPlugin');
hash.update(data);
});
compilation.hooks.processAssets.tapPromise({
name: pluginName,
stage: Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE
}, assets => this.optimize(compiler, compilation, assets, CacheEngine));
compilation.hooks.statsPrinter.tap(pluginName, stats => {
stats.hooks.print.for('asset.info.minimized').tap('terser-webpack-plugin', (minimized, {
green,
formatFlag
}) => // eslint-disable-next-line no-undefined
minimized ? green(formatFlag('minimized')) : undefined);
});
}
});
}
}
var _default = TerserPlugin;
exports.default = _default;

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node_modules/terser-webpack-plugin/dist/minify.js generated vendored Normal file
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"use strict";
const {
minify: terserMinify
} = require('terser');
const buildTerserOptions = ({
ecma,
parse = {},
compress = {},
mangle,
module,
output,
toplevel,
nameCache,
ie8,
/* eslint-disable camelcase */
keep_classnames,
keep_fnames,
/* eslint-enable camelcase */
safari10
} = {}) => ({
parse: { ...parse
},
compress: typeof compress === 'boolean' ? compress : { ...compress
},
// eslint-disable-next-line no-nested-ternary
mangle: mangle == null ? true : typeof mangle === 'boolean' ? mangle : { ...mangle
},
output: {
beautify: false,
...output
},
// Ignoring sourceMap from options
sourceMap: null,
ecma,
keep_classnames,
keep_fnames,
ie8,
module,
nameCache,
safari10,
toplevel
});
function isObject(value) {
const type = typeof value;
return value != null && (type === 'object' || type === 'function');
}
const buildComments = (extractComments, terserOptions, extractedComments) => {
const condition = {};
const {
comments
} = terserOptions.output;
condition.preserve = typeof comments !== 'undefined' ? comments : false;
if (typeof extractComments === 'boolean' && extractComments) {
condition.extract = 'some';
} else if (typeof extractComments === 'string' || extractComments instanceof RegExp) {
condition.extract = extractComments;
} else if (typeof extractComments === 'function') {
condition.extract = extractComments;
} else if (isObject(extractComments)) {
condition.extract = typeof extractComments.condition === 'boolean' && extractComments.condition ? 'some' : typeof extractComments.condition !== 'undefined' ? extractComments.condition : 'some';
} else {
// No extract
// Preserve using "commentsOpts" or "some"
condition.preserve = typeof comments !== 'undefined' ? comments : 'some';
condition.extract = false;
} // Ensure that both conditions are functions
['preserve', 'extract'].forEach(key => {
let regexStr;
let regex;
switch (typeof condition[key]) {
case 'boolean':
condition[key] = condition[key] ? () => true : () => false;
break;
case 'function':
break;
case 'string':
if (condition[key] === 'all') {
condition[key] = () => true;
break;
}
if (condition[key] === 'some') {
condition[key] = (astNode, comment) => {
return (comment.type === 'comment2' || comment.type === 'comment1') && /@preserve|@lic|@cc_on|^\**!/i.test(comment.value);
};
break;
}
regexStr = condition[key];
condition[key] = (astNode, comment) => {
return new RegExp(regexStr).test(comment.value);
};
break;
default:
regex = condition[key];
condition[key] = (astNode, comment) => regex.test(comment.value);
}
}); // Redefine the comments function to extract and preserve
// comments according to the two conditions
return (astNode, comment) => {
if (condition.extract(astNode, comment)) {
const commentText = comment.type === 'comment2' ? `/*${comment.value}*/` : `//${comment.value}`; // Don't include duplicate comments
if (!extractedComments.includes(commentText)) {
extractedComments.push(commentText);
}
}
return condition.preserve(astNode, comment);
};
};
async function minify(options) {
const {
name,
input,
inputSourceMap,
minify: minifyFn,
minimizerOptions
} = options;
if (minifyFn) {
return minifyFn({
[name]: input
}, inputSourceMap, minimizerOptions);
} // Copy terser options
const terserOptions = buildTerserOptions(minimizerOptions); // Let terser generate a SourceMap
if (inputSourceMap) {
terserOptions.sourceMap = {
asObject: true
};
}
const extractedComments = [];
const {
extractComments
} = options;
terserOptions.output.comments = buildComments(extractComments, terserOptions, extractedComments);
const result = await terserMinify({
[name]: input
}, terserOptions);
return { ...result,
extractedComments
};
}
function transform(options) {
// 'use strict' => this === undefined (Clean Scope)
// Safer for possible security issues, albeit not critical at all here
// eslint-disable-next-line no-new-func, no-param-reassign
options = new Function('exports', 'require', 'module', '__filename', '__dirname', `'use strict'\nreturn ${options}`)(exports, require, module, __filename, __dirname);
return minify(options);
}
module.exports.minify = minify;
module.exports.transform = transform;

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{
"definitions": {
"Rule": {
"description": "Filtering rule as regex or string.",
"anyOf": [
{
"instanceof": "RegExp",
"tsType": "RegExp"
},
{
"type": "string",
"minLength": 1
}
]
},
"Rules": {
"description": "Filtering rules.",
"anyOf": [
{
"type": "array",
"items": {
"description": "A rule condition.",
"oneOf": [
{
"$ref": "#/definitions/Rule"
}
]
}
},
{
"$ref": "#/definitions/Rule"
}
]
}
},
"title": "TerserPluginOptions",
"type": "object",
"additionalProperties": false,
"properties": {
"test": {
"description": "Include all modules that pass test assertion.",
"oneOf": [
{
"$ref": "#/definitions/Rules"
}
]
},
"include": {
"description": "Include all modules matching any of these conditions.",
"oneOf": [
{
"$ref": "#/definitions/Rules"
}
]
},
"exclude": {
"description": "Exclude all modules matching any of these conditions.",
"oneOf": [
{
"$ref": "#/definitions/Rules"
}
]
},
"cache": {
"description": "Enable file caching. Ignored in webpack 5, for webpack 5 please use https://webpack.js.org/configuration/other-options/#cache.",
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
}
]
},
"cacheKeys": {
"description": "Allows you to override default cache keys. Ignored in webpack 5, for webpack 5 please use https://webpack.js.org/configuration/other-options/#cache.",
"instanceof": "Function"
},
"parallel": {
"description": "Use multi-process parallel running to improve the build speed.",
"anyOf": [
{
"type": "boolean"
},
{
"type": "integer"
}
]
},
"sourceMap": {
"description": "Enables/Disables generation of source maps.",
"type": "boolean"
},
"minify": {
"description": "Allows you to override default minify function.",
"instanceof": "Function"
},
"terserOptions": {
"description": "Options for `terser`.",
"additionalProperties": true,
"type": "object"
},
"extractComments": {
"description": "Whether comments shall be extracted to a separate file.",
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
},
{
"instanceof": "RegExp"
},
{
"instanceof": "Function"
},
{
"additionalProperties": false,
"properties": {
"condition": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
},
{
"instanceof": "RegExp"
},
{
"instanceof": "Function"
}
]
},
"filename": {
"anyOf": [
{
"type": "string"
},
{
"instanceof": "Function"
}
]
},
"banner": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "string"
},
{
"instanceof": "Function"
}
]
}
},
"type": "object"
}
]
}
}
}

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../acorn/bin/acorn

1
node_modules/terser-webpack-plugin/node_modules/.bin/semver generated vendored Symbolic link
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../semver/bin/semver.js

1
node_modules/terser-webpack-plugin/node_modules/.bin/terser generated vendored Symbolic link
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../terser/bin/terser

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node_modules/terser-webpack-plugin/node_modules/acorn/CHANGELOG.md generated vendored Normal file
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## 8.6.0 (2021-11-18)
### Bug fixes
Fix a bug where an object literal with multiple `__proto__` properties would incorrectly be accepted if a later property value held an assigment.
### New features
Support class private fields with the `in` operator.
## 8.5.0 (2021-09-06)
### Bug fixes
Improve context-dependent tokenization in a number of corner cases.
Fix location tracking after a 0x2028 or 0x2029 character in a string literal (which before did not increase the line number).
Fix an issue where arrow function bodies in for loop context would inappropriately consume `in` operators.
Fix wrong end locations stored on SequenceExpression nodes.
Implement restriction that `for`/`of` loop LHS can't start with `let`.
### New features
Add support for ES2022 class static blocks.
Allow multiple input files to be passed to the CLI tool.
## 8.4.1 (2021-06-24)
### Bug fixes
Fix a bug where `allowAwaitOutsideFunction` would allow `await` in class field initializers, and setting `ecmaVersion` to 13 or higher would allow top-level await in non-module sources.
## 8.4.0 (2021-06-11)
### New features
A new option, `allowSuperOutsideMethod`, can be used to suppress the error when `super` is used in the wrong context.
## 8.3.0 (2021-05-31)
### New features
Default `allowAwaitOutsideFunction` to true for ECMAScript 2022 an higher.
Add support for the `d` ([indices](https://github.com/tc39/proposal-regexp-match-indices)) regexp flag.
## 8.2.4 (2021-05-04)
### Bug fixes
Fix spec conformity in corner case 'for await (async of ...)'.
## 8.2.3 (2021-05-04)
### Bug fixes
Fix an issue where the library couldn't parse 'for (async of ...)'.
Fix a bug in UTF-16 decoding that would read characters incorrectly in some circumstances.
## 8.2.2 (2021-04-29)
### Bug fixes
Fix a bug where a class field initialized to an async arrow function wouldn't allow await inside it. Same issue existed for generator arrow functions with yield.
## 8.2.1 (2021-04-24)
### Bug fixes
Fix a regression introduced in 8.2.0 where static or async class methods with keyword names fail to parse.
## 8.2.0 (2021-04-24)
### New features
Add support for ES2022 class fields and private methods.
## 8.1.1 (2021-04-12)
### Various
Stop shipping source maps in the NPM package.
## 8.1.0 (2021-03-09)
### Bug fixes
Fix a spurious error in nested destructuring arrays.
### New features
Expose `allowAwaitOutsideFunction` in CLI interface.
Make `allowImportExportAnywhere` also apply to `import.meta`.
## 8.0.5 (2021-01-25)
### Bug fixes
Adjust package.json to work with Node 12.16.0 and 13.0-13.6.
## 8.0.4 (2020-10-05)
### Bug fixes
Make `await x ** y` an error, following the spec.
Fix potentially exponential regular expression.
## 8.0.3 (2020-10-02)
### Bug fixes
Fix a wasteful loop during `Parser` creation when setting `ecmaVersion` to `"latest"`.
## 8.0.2 (2020-09-30)
### Bug fixes
Make the TypeScript types reflect the current allowed values for `ecmaVersion`.
Fix another regexp/division tokenizer issue.
## 8.0.1 (2020-08-12)
### Bug fixes
Provide the correct value in the `version` export.
## 8.0.0 (2020-08-12)
### Bug fixes
Disallow expressions like `(a = b) = c`.
Make non-octal escape sequences a syntax error in strict mode.
### New features
The package can now be loaded directly as an ECMAScript module in node 13+.
Update to the set of Unicode properties from ES2021.
### Breaking changes
The `ecmaVersion` option is now required. For the moment, omitting it will still work with a warning, but that will change in a future release.
Some changes to method signatures that may be used by plugins.
## 7.4.0 (2020-08-03)
### New features
Add support for logical assignment operators.
Add support for numeric separators.
## 7.3.1 (2020-06-11)
### Bug fixes
Make the string in the `version` export match the actual library version.
## 7.3.0 (2020-06-11)
### Bug fixes
Fix a bug that caused parsing of object patterns with a property named `set` that had a default value to fail.
### New features
Add support for optional chaining (`?.`).
## 7.2.0 (2020-05-09)
### Bug fixes
Fix precedence issue in parsing of async arrow functions.
### New features
Add support for nullish coalescing.
Add support for `import.meta`.
Support `export * as ...` syntax.
Upgrade to Unicode 13.
## 6.4.1 (2020-03-09)
### Bug fixes
More carefully check for valid UTF16 surrogate pairs in regexp validator.
## 7.1.1 (2020-03-01)
### Bug fixes
Treat `\8` and `\9` as invalid escapes in template strings.
Allow unicode escapes in property names that are keywords.
Don't error on an exponential operator expression as argument to `await`.
More carefully check for valid UTF16 surrogate pairs in regexp validator.
## 7.1.0 (2019-09-24)
### Bug fixes
Disallow trailing object literal commas when ecmaVersion is less than 5.
### New features
Add a static `acorn` property to the `Parser` class that contains the entire module interface, to allow plugins to access the instance of the library that they are acting on.
## 7.0.0 (2019-08-13)
### Breaking changes
Changes the node format for dynamic imports to use the `ImportExpression` node type, as defined in [ESTree](https://github.com/estree/estree/blob/master/es2020.md#importexpression).
Makes 10 (ES2019) the default value for the `ecmaVersion` option.
## 6.3.0 (2019-08-12)
### New features
`sourceType: "module"` can now be used even when `ecmaVersion` is less than 6, to parse module-style code that otherwise conforms to an older standard.
## 6.2.1 (2019-07-21)
### Bug fixes
Fix bug causing Acorn to treat some characters as identifier characters that shouldn't be treated as such.
Fix issue where setting the `allowReserved` option to `"never"` allowed reserved words in some circumstances.
## 6.2.0 (2019-07-04)
### Bug fixes
Improve valid assignment checking in `for`/`in` and `for`/`of` loops.
Disallow binding `let` in patterns.
### New features
Support bigint syntax with `ecmaVersion` >= 11.
Support dynamic `import` syntax with `ecmaVersion` >= 11.
Upgrade to Unicode version 12.
## 6.1.1 (2019-02-27)
### Bug fixes
Fix bug that caused parsing default exports of with names to fail.
## 6.1.0 (2019-02-08)
### Bug fixes
Fix scope checking when redefining a `var` as a lexical binding.
### New features
Split up `parseSubscripts` to use an internal `parseSubscript` method to make it easier to extend with plugins.
## 6.0.7 (2019-02-04)
### Bug fixes
Check that exported bindings are defined.
Don't treat `\u180e` as a whitespace character.
Check for duplicate parameter names in methods.
Don't allow shorthand properties when they are generators or async methods.
Forbid binding `await` in async arrow function's parameter list.
## 6.0.6 (2019-01-30)
### Bug fixes
The content of class declarations and expressions is now always parsed in strict mode.
Don't allow `let` or `const` to bind the variable name `let`.
Treat class declarations as lexical.
Don't allow a generator function declaration as the sole body of an `if` or `else`.
Ignore `"use strict"` when after an empty statement.
Allow string line continuations with special line terminator characters.
Treat `for` bodies as part of the `for` scope when checking for conflicting bindings.
Fix bug with parsing `yield` in a `for` loop initializer.
Implement special cases around scope checking for functions.
## 6.0.5 (2019-01-02)
### Bug fixes
Fix TypeScript type for `Parser.extend` and add `allowAwaitOutsideFunction` to options type.
Don't treat `let` as a keyword when the next token is `{` on the next line.
Fix bug that broke checking for parentheses around an object pattern in a destructuring assignment when `preserveParens` was on.
## 6.0.4 (2018-11-05)
### Bug fixes
Further improvements to tokenizing regular expressions in corner cases.
## 6.0.3 (2018-11-04)
### Bug fixes
Fix bug in tokenizing an expression-less return followed by a function followed by a regular expression.
Remove stray symlink in the package tarball.
## 6.0.2 (2018-09-26)
### Bug fixes
Fix bug where default expressions could fail to parse inside an object destructuring assignment expression.
## 6.0.1 (2018-09-14)
### Bug fixes
Fix wrong value in `version` export.
## 6.0.0 (2018-09-14)
### Bug fixes
Better handle variable-redefinition checks for catch bindings and functions directly under if statements.
Forbid `new.target` in top-level arrow functions.
Fix issue with parsing a regexp after `yield` in some contexts.
### New features
The package now comes with TypeScript definitions.
### Breaking changes
The default value of the `ecmaVersion` option is now 9 (2018).
Plugins work differently, and will have to be rewritten to work with this version.
The loose parser and walker have been moved into separate packages (`acorn-loose` and `acorn-walk`).
## 5.7.3 (2018-09-10)
### Bug fixes
Fix failure to tokenize regexps after expressions like `x.of`.
Better error message for unterminated template literals.
## 5.7.2 (2018-08-24)
### Bug fixes
Properly handle `allowAwaitOutsideFunction` in for statements.
Treat function declarations at the top level of modules like let bindings.
Don't allow async function declarations as the only statement under a label.
## 5.7.0 (2018-06-15)
### New features
Upgraded to Unicode 11.
## 5.6.0 (2018-05-31)
### New features
Allow U+2028 and U+2029 in string when ECMAVersion >= 10.
Allow binding-less catch statements when ECMAVersion >= 10.
Add `allowAwaitOutsideFunction` option for parsing top-level `await`.
## 5.5.3 (2018-03-08)
### Bug fixes
A _second_ republish of the code in 5.5.1, this time with yarn, to hopefully get valid timestamps.
## 5.5.2 (2018-03-08)
### Bug fixes
A republish of the code in 5.5.1 in an attempt to solve an issue with the file timestamps in the npm package being 0.
## 5.5.1 (2018-03-06)
### Bug fixes
Fix misleading error message for octal escapes in template strings.
## 5.5.0 (2018-02-27)
### New features
The identifier character categorization is now based on Unicode version 10.
Acorn will now validate the content of regular expressions, including new ES9 features.
## 5.4.0 (2018-02-01)
### Bug fixes
Disallow duplicate or escaped flags on regular expressions.
Disallow octal escapes in strings in strict mode.
### New features
Add support for async iteration.
Add support for object spread and rest.
## 5.3.0 (2017-12-28)
### Bug fixes
Fix parsing of floating point literals with leading zeroes in loose mode.
Allow duplicate property names in object patterns.
Don't allow static class methods named `prototype`.
Disallow async functions directly under `if` or `else`.
Parse right-hand-side of `for`/`of` as an assignment expression.
Stricter parsing of `for`/`in`.
Don't allow unicode escapes in contextual keywords.
### New features
Parsing class members was factored into smaller methods to allow plugins to hook into it.
## 5.2.1 (2017-10-30)
### Bug fixes
Fix a token context corruption bug.
## 5.2.0 (2017-10-30)
### Bug fixes
Fix token context tracking for `class` and `function` in property-name position.
Make sure `%*` isn't parsed as a valid operator.
Allow shorthand properties `get` and `set` to be followed by default values.
Disallow `super` when not in callee or object position.
### New features
Support [`directive` property](https://github.com/estree/estree/compare/b3de58c9997504d6fba04b72f76e6dd1619ee4eb...1da8e603237144f44710360f8feb7a9977e905e0) on directive expression statements.
## 5.1.2 (2017-09-04)
### Bug fixes
Disable parsing of legacy HTML-style comments in modules.
Fix parsing of async methods whose names are keywords.
## 5.1.1 (2017-07-06)
### Bug fixes
Fix problem with disambiguating regexp and division after a class.
## 5.1.0 (2017-07-05)
### Bug fixes
Fix tokenizing of regexps in an object-desctructuring `for`/`of` loop and after `yield`.
Parse zero-prefixed numbers with non-octal digits as decimal.
Allow object/array patterns in rest parameters.
Don't error when `yield` is used as a property name.
Allow `async` as a shorthand object property.
### New features
Implement the [template literal revision proposal](https://github.com/tc39/proposal-template-literal-revision) for ES9.
## 5.0.3 (2017-04-01)
### Bug fixes
Fix spurious duplicate variable definition errors for named functions.
## 5.0.2 (2017-03-30)
### Bug fixes
A binary operator after a parenthesized arrow expression is no longer incorrectly treated as an error.
## 5.0.0 (2017-03-28)
### Bug fixes
Raise an error for duplicated lexical bindings.
Fix spurious error when an assignement expression occurred after a spread expression.
Accept regular expressions after `of` (in `for`/`of`), `yield` (in a generator), and braced arrow functions.
Allow labels in front or `var` declarations, even in strict mode.
### Breaking changes
Parse declarations following `export default` as declaration nodes, not expressions. This means that class and function declarations nodes can now have `null` as their `id`.
## 4.0.11 (2017-02-07)
### Bug fixes
Allow all forms of member expressions to be parenthesized as lvalue.
## 4.0.10 (2017-02-07)
### Bug fixes
Don't expect semicolons after default-exported functions or classes, even when they are expressions.
Check for use of `'use strict'` directives in non-simple parameter functions, even when already in strict mode.
## 4.0.9 (2017-02-06)
### Bug fixes
Fix incorrect error raised for parenthesized simple assignment targets, so that `(x) = 1` parses again.
## 4.0.8 (2017-02-03)
### Bug fixes
Solve spurious parenthesized pattern errors by temporarily erring on the side of accepting programs that our delayed errors don't handle correctly yet.
## 4.0.7 (2017-02-02)
### Bug fixes
Accept invalidly rejected code like `(x).y = 2` again.
Don't raise an error when a function _inside_ strict code has a non-simple parameter list.
## 4.0.6 (2017-02-02)
### Bug fixes
Fix exponential behavior (manifesting itself as a complete hang for even relatively small source files) introduced by the new 'use strict' check.
## 4.0.5 (2017-02-02)
### Bug fixes
Disallow parenthesized pattern expressions.
Allow keywords as export names.
Don't allow the `async` keyword to be parenthesized.
Properly raise an error when a keyword contains a character escape.
Allow `"use strict"` to appear after other string literal expressions.
Disallow labeled declarations.
## 4.0.4 (2016-12-19)
### Bug fixes
Fix crash when `export` was followed by a keyword that can't be
exported.
## 4.0.3 (2016-08-16)
### Bug fixes
Allow regular function declarations inside single-statement `if` branches in loose mode. Forbid them entirely in strict mode.
Properly parse properties named `async` in ES2017 mode.
Fix bug where reserved words were broken in ES2017 mode.
## 4.0.2 (2016-08-11)
### Bug fixes
Don't ignore period or 'e' characters after octal numbers.
Fix broken parsing for call expressions in default parameter values of arrow functions.
## 4.0.1 (2016-08-08)
### Bug fixes
Fix false positives in duplicated export name errors.
## 4.0.0 (2016-08-07)
### Breaking changes
The default `ecmaVersion` option value is now 7.
A number of internal method signatures changed, so plugins might need to be updated.
### Bug fixes
The parser now raises errors on duplicated export names.
`arguments` and `eval` can now be used in shorthand properties.
Duplicate parameter names in non-simple argument lists now always produce an error.
### New features
The `ecmaVersion` option now also accepts year-style version numbers
(2015, etc).
Support for `async`/`await` syntax when `ecmaVersion` is >= 8.
Support for trailing commas in call expressions when `ecmaVersion` is >= 8.
## 3.3.0 (2016-07-25)
### Bug fixes
Fix bug in tokenizing of regexp operator after a function declaration.
Fix parser crash when parsing an array pattern with a hole.
### New features
Implement check against complex argument lists in functions that enable strict mode in ES7.
## 3.2.0 (2016-06-07)
### Bug fixes
Improve handling of lack of unicode regexp support in host
environment.
Properly reject shorthand properties whose name is a keyword.
### New features
Visitors created with `visit.make` now have their base as _prototype_, rather than copying properties into a fresh object.
## 3.1.0 (2016-04-18)
### Bug fixes
Properly tokenize the division operator directly after a function expression.
Allow trailing comma in destructuring arrays.
## 3.0.4 (2016-02-25)
### Fixes
Allow update expressions as left-hand-side of the ES7 exponential operator.
## 3.0.2 (2016-02-10)
### Fixes
Fix bug that accidentally made `undefined` a reserved word when parsing ES7.
## 3.0.0 (2016-02-10)
### Breaking changes
The default value of the `ecmaVersion` option is now 6 (used to be 5).
Support for comprehension syntax (which was dropped from the draft spec) has been removed.
### Fixes
`let` and `yield` are now “contextual keywords”, meaning you can mostly use them as identifiers in ES5 non-strict code.
A parenthesized class or function expression after `export default` is now parsed correctly.
### New features
When `ecmaVersion` is set to 7, Acorn will parse the exponentiation operator (`**`).
The identifier character ranges are now based on Unicode 8.0.0.
Plugins can now override the `raiseRecoverable` method to override the way non-critical errors are handled.
## 2.7.0 (2016-01-04)
### Fixes
Stop allowing rest parameters in setters.
Disallow `y` rexexp flag in ES5.
Disallow `\00` and `\000` escapes in strict mode.
Raise an error when an import name is a reserved word.
## 2.6.2 (2015-11-10)
### Fixes
Don't crash when no options object is passed.
## 2.6.0 (2015-11-09)
### Fixes
Add `await` as a reserved word in module sources.
Disallow `yield` in a parameter default value for a generator.
Forbid using a comma after a rest pattern in an array destructuring.
### New features
Support parsing stdin in command-line tool.
## 2.5.0 (2015-10-27)
### Fixes
Fix tokenizer support in the command-line tool.
Stop allowing `new.target` outside of functions.
Remove legacy `guard` and `guardedHandler` properties from try nodes.
Stop allowing multiple `__proto__` properties on an object literal in strict mode.
Don't allow rest parameters to be non-identifier patterns.
Check for duplicate paramter names in arrow functions.

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MIT License
Copyright (C) 2012-2020 by various contributors (see AUTHORS)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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# Acorn
A tiny, fast JavaScript parser written in JavaScript.
## Community
Acorn is open source software released under an
[MIT license](https://github.com/acornjs/acorn/blob/master/acorn/LICENSE).
You are welcome to
[report bugs](https://github.com/acornjs/acorn/issues) or create pull
requests on [github](https://github.com/acornjs/acorn). For questions
and discussion, please use the
[Tern discussion forum](https://discuss.ternjs.net).
## Installation
The easiest way to install acorn is from [`npm`](https://www.npmjs.com/):
```sh
npm install acorn
```
Alternately, you can download the source and build acorn yourself:
```sh
git clone https://github.com/acornjs/acorn.git
cd acorn
npm install
```
## Interface
**parse**`(input, options)` is the main interface to the library. The
`input` parameter is a string, `options` must be an object setting
some of the options listed below. The return value will be an abstract
syntax tree object as specified by the [ESTree
spec](https://github.com/estree/estree).
```javascript
let acorn = require("acorn");
console.log(acorn.parse("1 + 1", {ecmaVersion: 2020}));
```
When encountering a syntax error, the parser will raise a
`SyntaxError` object with a meaningful message. The error object will
have a `pos` property that indicates the string offset at which the
error occurred, and a `loc` object that contains a `{line, column}`
object referring to that same position.
Options are provided by in a second argument, which should be an
object containing any of these fields (only `ecmaVersion` is
required):
- **ecmaVersion**: Indicates the ECMAScript version to parse. Must be
either 3, 5, 6 (or 2015), 7 (2016), 8 (2017), 9 (2018), 10 (2019),
11 (2020), 12 (2021), 13 (2022, partial support)
or `"latest"` (the latest the library supports). This influences
support for strict mode, the set of reserved words, and support
for new syntax features.
**NOTE**: Only 'stage 4' (finalized) ECMAScript features are being
implemented by Acorn. Other proposed new features must be
implemented through plugins.
- **sourceType**: Indicate the mode the code should be parsed in. Can be
either `"script"` or `"module"`. This influences global strict mode
and parsing of `import` and `export` declarations.
**NOTE**: If set to `"module"`, then static `import` / `export` syntax
will be valid, even if `ecmaVersion` is less than 6.
- **onInsertedSemicolon**: If given a callback, that callback will be
called whenever a missing semicolon is inserted by the parser. The
callback will be given the character offset of the point where the
semicolon is inserted as argument, and if `locations` is on, also a
`{line, column}` object representing this position.
- **onTrailingComma**: Like `onInsertedSemicolon`, but for trailing
commas.
- **allowReserved**: If `false`, using a reserved word will generate
an error. Defaults to `true` for `ecmaVersion` 3, `false` for higher
versions. When given the value `"never"`, reserved words and
keywords can also not be used as property names (as in Internet
Explorer's old parser).
- **allowReturnOutsideFunction**: By default, a return statement at
the top level raises an error. Set this to `true` to accept such
code.
- **allowImportExportEverywhere**: By default, `import` and `export`
declarations can only appear at a program's top level. Setting this
option to `true` allows them anywhere where a statement is allowed,
and also allows `import.meta` expressions to appear in scripts
(when `sourceType` is not `"module"`).
- **allowAwaitOutsideFunction**: If `false`, `await` expressions can
only appear inside `async` functions. Defaults to `true` for
`ecmaVersion` 2022 and later, `false` for lower versions. Setting this option to
`true` allows to have top-level `await` expressions. They are
still not allowed in non-`async` functions, though.
- **allowSuperOutsideMethod**: By default, `super` outside a method
raises an error. Set this to `true` to accept such code.
- **allowHashBang**: When this is enabled (off by default), if the
code starts with the characters `#!` (as in a shellscript), the
first line will be treated as a comment.
- **locations**: When `true`, each node has a `loc` object attached
with `start` and `end` subobjects, each of which contains the
one-based line and zero-based column numbers in `{line, column}`
form. Default is `false`.
- **onToken**: If a function is passed for this option, each found
token will be passed in same format as tokens returned from
`tokenizer().getToken()`.
If array is passed, each found token is pushed to it.
Note that you are not allowed to call the parser from the
callback—that will corrupt its internal state.
- **onComment**: If a function is passed for this option, whenever a
comment is encountered the function will be called with the
following parameters:
- `block`: `true` if the comment is a block comment, false if it
is a line comment.
- `text`: The content of the comment.
- `start`: Character offset of the start of the comment.
- `end`: Character offset of the end of the comment.
When the `locations` options is on, the `{line, column}` locations
of the comment’s start and end are passed as two additional
parameters.
If array is passed for this option, each found comment is pushed
to it as object in Esprima format:
```javascript
{
"type": "Line" | "Block",
"value": "comment text",
"start": Number,
"end": Number,
// If `locations` option is on:
"loc": {
"start": {line: Number, column: Number}
"end": {line: Number, column: Number}
},
// If `ranges` option is on:
"range": [Number, Number]
}
```
Note that you are not allowed to call the parser from the
callback—that will corrupt its internal state.
- **ranges**: Nodes have their start and end characters offsets
recorded in `start` and `end` properties (directly on the node,
rather than the `loc` object, which holds line/column data. To also
add a
[semi-standardized](https://bugzilla.mozilla.org/show_bug.cgi?id=745678)
`range` property holding a `[start, end]` array with the same
numbers, set the `ranges` option to `true`.
- **program**: It is possible to parse multiple files into a single
AST by passing the tree produced by parsing the first file as the
`program` option in subsequent parses. This will add the toplevel
forms of the parsed file to the "Program" (top) node of an existing
parse tree.
- **sourceFile**: When the `locations` option is `true`, you can pass
this option to add a `source` attribute in every node’s `loc`
object. Note that the contents of this option are not examined or
processed in any way; you are free to use whatever format you
choose.
- **directSourceFile**: Like `sourceFile`, but a `sourceFile` property
will be added (regardless of the `location` option) directly to the
nodes, rather than the `loc` object.
- **preserveParens**: If this option is `true`, parenthesized expressions
are represented by (non-standard) `ParenthesizedExpression` nodes
that have a single `expression` property containing the expression
inside parentheses.
**parseExpressionAt**`(input, offset, options)` will parse a single
expression in a string, and return its AST. It will not complain if
there is more of the string left after the expression.
**tokenizer**`(input, options)` returns an object with a `getToken`
method that can be called repeatedly to get the next token, a `{start,
end, type, value}` object (with added `loc` property when the
`locations` option is enabled and `range` property when the `ranges`
option is enabled). When the token's type is `tokTypes.eof`, you
should stop calling the method, since it will keep returning that same
token forever.
In ES6 environment, returned result can be used as any other
protocol-compliant iterable:
```javascript
for (let token of acorn.tokenizer(str)) {
// iterate over the tokens
}
// transform code to array of tokens:
var tokens = [...acorn.tokenizer(str)];
```
**tokTypes** holds an object mapping names to the token type objects
that end up in the `type` properties of tokens.
**getLineInfo**`(input, offset)` can be used to get a `{line,
column}` object for a given program string and offset.
### The `Parser` class
Instances of the **`Parser`** class contain all the state and logic
that drives a parse. It has static methods `parse`,
`parseExpressionAt`, and `tokenizer` that match the top-level
functions by the same name.
When extending the parser with plugins, you need to call these methods
on the extended version of the class. To extend a parser with plugins,
you can use its static `extend` method.
```javascript
var acorn = require("acorn");
var jsx = require("acorn-jsx");
var JSXParser = acorn.Parser.extend(jsx());
JSXParser.parse("foo(<bar/>)", {ecmaVersion: 2020});
```
The `extend` method takes any number of plugin values, and returns a
new `Parser` class that includes the extra parser logic provided by
the plugins.
## Command line interface
The `bin/acorn` utility can be used to parse a file from the command
line. It accepts as arguments its input file and the following
options:
- `--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|--ecma10`: Sets the ECMAScript version
to parse. Default is version 9.
- `--module`: Sets the parsing mode to `"module"`. Is set to `"script"` otherwise.
- `--locations`: Attaches a "loc" object to each node with "start" and
"end" subobjects, each of which contains the one-based line and
zero-based column numbers in `{line, column}` form.
- `--allow-hash-bang`: If the code starts with the characters #! (as
in a shellscript), the first line will be treated as a comment.
- `--allow-await-outside-function`: Allows top-level `await` expressions.
See the `allowAwaitOutsideFunction` option for more information.
- `--compact`: No whitespace is used in the AST output.
- `--silent`: Do not output the AST, just return the exit status.
- `--help`: Print the usage information and quit.
The utility spits out the syntax tree as JSON data.
## Existing plugins
- [`acorn-jsx`](https://github.com/RReverser/acorn-jsx): Parse [Facebook JSX syntax extensions](https://github.com/facebook/jsx)
Plugins for ECMAScript proposals:
- [`acorn-stage3`](https://github.com/acornjs/acorn-stage3): Parse most stage 3 proposals, bundling:
- [`acorn-class-fields`](https://github.com/acornjs/acorn-class-fields): Parse [class fields proposal](https://github.com/tc39/proposal-class-fields)
- [`acorn-import-meta`](https://github.com/acornjs/acorn-import-meta): Parse [import.meta proposal](https://github.com/tc39/proposal-import-meta)
- [`acorn-private-methods`](https://github.com/acornjs/acorn-private-methods): parse [private methods, getters and setters proposal](https://github.com/tc39/proposal-private-methods)n

4
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#!/usr/bin/env node
'use strict';
require('../dist/bin.js');

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export as namespace acorn
export = acorn
declare namespace acorn {
function parse(input: string, options: Options): Node
function parseExpressionAt(input: string, pos: number, options: Options): Node
function tokenizer(input: string, options: Options): {
getToken(): Token
[Symbol.iterator](): Iterator<Token>
}
interface Options {
ecmaVersion: 3 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 'latest'
sourceType?: 'script' | 'module'
onInsertedSemicolon?: (lastTokEnd: number, lastTokEndLoc?: Position) => void
onTrailingComma?: (lastTokEnd: number, lastTokEndLoc?: Position) => void
allowReserved?: boolean | 'never'
allowReturnOutsideFunction?: boolean
allowImportExportEverywhere?: boolean
allowAwaitOutsideFunction?: boolean
allowSuperOutsideMethod?: boolean
allowHashBang?: boolean
locations?: boolean
onToken?: ((token: Token) => any) | Token[]
onComment?: ((
isBlock: boolean, text: string, start: number, end: number, startLoc?: Position,
endLoc?: Position
) => void) | Comment[]
ranges?: boolean
program?: Node
sourceFile?: string
directSourceFile?: string
preserveParens?: boolean
}
class Parser {
constructor(options: Options, input: string, startPos?: number)
parse(this: Parser): Node
static parse(this: typeof Parser, input: string, options: Options): Node
static parseExpressionAt(this: typeof Parser, input: string, pos: number, options: Options): Node
static tokenizer(this: typeof Parser, input: string, options: Options): {
getToken(): Token
[Symbol.iterator](): Iterator<Token>
}
static extend(this: typeof Parser, ...plugins: ((BaseParser: typeof Parser) => typeof Parser)[]): typeof Parser
}
interface Position { line: number; column: number; offset: number }
const defaultOptions: Options
function getLineInfo(input: string, offset: number): Position
class SourceLocation {
start: Position
end: Position
source?: string | null
constructor(p: Parser, start: Position, end: Position)
}
class Node {
type: string
start: number
end: number
loc?: SourceLocation
sourceFile?: string
range?: [number, number]
constructor(parser: Parser, pos: number, loc?: SourceLocation)
}
class TokenType {
label: string
keyword: string
beforeExpr: boolean
startsExpr: boolean
isLoop: boolean
isAssign: boolean
prefix: boolean
postfix: boolean
binop: number
updateContext?: (prevType: TokenType) => void
constructor(label: string, conf?: any)
}
const tokTypes: {
num: TokenType
regexp: TokenType
string: TokenType
name: TokenType
privateId: TokenType
eof: TokenType
bracketL: TokenType
bracketR: TokenType
braceL: TokenType
braceR: TokenType
parenL: TokenType
parenR: TokenType
comma: TokenType
semi: TokenType
colon: TokenType
dot: TokenType
question: TokenType
arrow: TokenType
template: TokenType
ellipsis: TokenType
backQuote: TokenType
dollarBraceL: TokenType
eq: TokenType
assign: TokenType
incDec: TokenType
prefix: TokenType
logicalOR: TokenType
logicalAND: TokenType
bitwiseOR: TokenType
bitwiseXOR: TokenType
bitwiseAND: TokenType
equality: TokenType
relational: TokenType
bitShift: TokenType
plusMin: TokenType
modulo: TokenType
star: TokenType
slash: TokenType
starstar: TokenType
_break: TokenType
_case: TokenType
_catch: TokenType
_continue: TokenType
_debugger: TokenType
_default: TokenType
_do: TokenType
_else: TokenType
_finally: TokenType
_for: TokenType
_function: TokenType
_if: TokenType
_return: TokenType
_switch: TokenType
_throw: TokenType
_try: TokenType
_var: TokenType
_const: TokenType
_while: TokenType
_with: TokenType
_new: TokenType
_this: TokenType
_super: TokenType
_class: TokenType
_extends: TokenType
_export: TokenType
_import: TokenType
_null: TokenType
_true: TokenType
_false: TokenType
_in: TokenType
_instanceof: TokenType
_typeof: TokenType
_void: TokenType
_delete: TokenType
}
class TokContext {
constructor(token: string, isExpr: boolean, preserveSpace: boolean, override?: (p: Parser) => void)
}
const tokContexts: {
b_stat: TokContext
b_expr: TokContext
b_tmpl: TokContext
p_stat: TokContext
p_expr: TokContext
q_tmpl: TokContext
f_expr: TokContext
f_stat: TokContext
f_expr_gen: TokContext
f_gen: TokContext
}
function isIdentifierStart(code: number, astral?: boolean): boolean
function isIdentifierChar(code: number, astral?: boolean): boolean
interface AbstractToken {
}
interface Comment extends AbstractToken {
type: string
value: string
start: number
end: number
loc?: SourceLocation
range?: [number, number]
}
class Token {
type: TokenType
value: any
start: number
end: number
loc?: SourceLocation
range?: [number, number]
constructor(p: Parser)
}
function isNewLine(code: number): boolean
const lineBreak: RegExp
const lineBreakG: RegExp
const version: string
}

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node_modules/terser-webpack-plugin/node_modules/acorn/dist/acorn.mjs.d.ts generated vendored Normal file
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import * as acorn from "./acorn";
export = acorn;

91
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'use strict';
var path = require('path');
var fs = require('fs');
var acorn = require('./acorn.js');
function _interopNamespace(e) {
if (e && e.__esModule) return e;
var n = Object.create(null);
if (e) {
Object.keys(e).forEach(function (k) {
if (k !== 'default') {
var d = Object.getOwnPropertyDescriptor(e, k);
Object.defineProperty(n, k, d.get ? d : {
enumerable: true,
get: function () { return e[k]; }
});
}
});
}
n["default"] = e;
return Object.freeze(n);
}
var acorn__namespace = /*#__PURE__*/_interopNamespace(acorn);
var inputFilePaths = [], forceFileName = false, fileMode = false, silent = false, compact = false, tokenize = false;
var options = {};
function help(status) {
var print = (status === 0) ? console.log : console.error;
print("usage: " + path.basename(process.argv[1]) + " [--ecma3|--ecma5|--ecma6|--ecma7|--ecma8|--ecma9|...|--ecma2015|--ecma2016|--ecma2017|--ecma2018|...]");
print(" [--tokenize] [--locations] [---allow-hash-bang] [--allow-await-outside-function] [--compact] [--silent] [--module] [--help] [--] [<infile>...]");
process.exit(status);
}
for (var i = 2; i < process.argv.length; ++i) {
var arg = process.argv[i];
if (arg[0] !== "-" || arg === "-") { inputFilePaths.push(arg); }
else if (arg === "--") {
inputFilePaths.push.apply(inputFilePaths, process.argv.slice(i + 1));
forceFileName = true;
break
} else if (arg === "--locations") { options.locations = true; }
else if (arg === "--allow-hash-bang") { options.allowHashBang = true; }
else if (arg === "--allow-await-outside-function") { options.allowAwaitOutsideFunction = true; }
else if (arg === "--silent") { silent = true; }
else if (arg === "--compact") { compact = true; }
else if (arg === "--help") { help(0); }
else if (arg === "--tokenize") { tokenize = true; }
else if (arg === "--module") { options.sourceType = "module"; }
else {
var match = arg.match(/^--ecma(\d+)$/);
if (match)
{ options.ecmaVersion = +match[1]; }
else
{ help(1); }
}
}
function run(codeList) {
var result = [], fileIdx = 0;
try {
codeList.forEach(function (code, idx) {
fileIdx = idx;
if (!tokenize) {
result = acorn__namespace.parse(code, options);
options.program = result;
} else {
var tokenizer = acorn__namespace.tokenizer(code, options), token;
do {
token = tokenizer.getToken();
result.push(token);
} while (token.type !== acorn__namespace.tokTypes.eof)
}
});
} catch (e) {
console.error(fileMode ? e.message.replace(/\(\d+:\d+\)$/, function (m) { return m.slice(0, 1) + inputFilePaths[fileIdx] + " " + m.slice(1); }) : e.message);
process.exit(1);
}
if (!silent) { console.log(JSON.stringify(result, null, compact ? null : 2)); }
}
if (fileMode = inputFilePaths.length && (forceFileName || !inputFilePaths.includes("-") || inputFilePaths.length !== 1)) {
run(inputFilePaths.map(function (path) { return fs.readFileSync(path, "utf8"); }));
} else {
var code = "";
process.stdin.resume();
process.stdin.on("data", function (chunk) { return code += chunk; });
process.stdin.on("end", function () { return run([code]); });
}

46
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{
"name": "acorn",
"description": "ECMAScript parser",
"homepage": "https://github.com/acornjs/acorn",
"main": "dist/acorn.js",
"types": "dist/acorn.d.ts",
"module": "dist/acorn.mjs",
"exports": {
".": [
{
"import": "./dist/acorn.mjs",
"require": "./dist/acorn.js",
"default": "./dist/acorn.js"
},
"./dist/acorn.js"
],
"./package.json": "./package.json"
},
"version": "8.6.0",
"engines": {"node": ">=0.4.0"},
"maintainers": [
{
"name": "Marijn Haverbeke",
"email": "marijnh@gmail.com",
"web": "https://marijnhaverbeke.nl"
},
{
"name": "Ingvar Stepanyan",
"email": "me@rreverser.com",
"web": "https://rreverser.com/"
},
{
"name": "Adrian Heine",
"web": "http://adrianheine.de"
}
],
"repository": {
"type": "git",
"url": "https://github.com/acornjs/acorn.git"
},
"license": "MIT",
"scripts": {
"prepare": "cd ..; npm run build:main && npm run build:bin"
},
"bin": {"acorn": "./bin/acorn"}
}

419
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2.20.3 / 2019-10-11
==================
* Support Node.js 0.10 (Revert #1059)
* Ran "npm unpublish commander@2.20.2". There is no 2.20.2.
2.20.1 / 2019-09-29
==================
* Improve executable subcommand tracking
* Update dev dependencies
2.20.0 / 2019-04-02
==================
* fix: resolve symbolic links completely when hunting for subcommands (#935)
* Update index.d.ts (#930)
* Update Readme.md (#924)
* Remove --save option as it isn't required anymore (#918)
* Add link to the license file (#900)
* Added example of receiving args from options (#858)
* Added missing semicolon (#882)
* Add extension to .eslintrc (#876)
2.19.0 / 2018-10-02
==================
* Removed newline after Options and Commands headers (#864)
* Bugfix - Error output (#862)
* Fix to change default value to string (#856)
2.18.0 / 2018-09-07
==================
* Standardize help output (#853)
* chmod 644 travis.yml (#851)
* add support for execute typescript subcommand via ts-node (#849)
2.17.1 / 2018-08-07
==================
* Fix bug in command emit (#844)
2.17.0 / 2018-08-03
==================
* fixed newline output after help information (#833)
* Fix to emit the action even without command (#778)
* npm update (#823)
2.16.0 / 2018-06-29
==================
* Remove Makefile and `test/run` (#821)
* Make 'npm test' run on Windows (#820)
* Add badge to display install size (#807)
* chore: cache node_modules (#814)
* chore: remove Node.js 4 (EOL), add Node.js 10 (#813)
* fixed typo in readme (#812)
* Fix types (#804)
* Update eslint to resolve vulnerabilities in lodash (#799)
* updated readme with custom event listeners. (#791)
* fix tests (#794)
2.15.0 / 2018-03-07
==================
* Update downloads badge to point to graph of downloads over time instead of duplicating link to npm
* Arguments description
2.14.1 / 2018-02-07
==================
* Fix typing of help function
2.14.0 / 2018-02-05
==================
* only register the option:version event once
* Fixes issue #727: Passing empty string for option on command is set to undefined
* enable eqeqeq rule
* resolves #754 add linter configuration to project
* resolves #560 respect custom name for version option
* document how to override the version flag
* document using options per command
2.13.0 / 2018-01-09
==================
* Do not print default for --no-
* remove trailing spaces in command help
* Update CI's Node.js to LTS and latest version
* typedefs: Command and Option types added to commander namespace
2.12.2 / 2017-11-28
==================
* fix: typings are not shipped
2.12.1 / 2017-11-23
==================
* Move @types/node to dev dependency
2.12.0 / 2017-11-22
==================
* add attributeName() method to Option objects
* Documentation updated for options with --no prefix
* typings: `outputHelp` takes a string as the first parameter
* typings: use overloads
* feat(typings): update to match js api
* Print default value in option help
* Fix translation error
* Fail when using same command and alias (#491)
* feat(typings): add help callback
* fix bug when description is add after command with options (#662)
* Format js code
* Rename History.md to CHANGELOG.md (#668)
* feat(typings): add typings to support TypeScript (#646)
* use current node
2.11.0 / 2017-07-03
==================
* Fix help section order and padding (#652)
* feature: support for signals to subcommands (#632)
* Fixed #37, --help should not display first (#447)
* Fix translation errors. (#570)
* Add package-lock.json
* Remove engines
* Upgrade package version
* Prefix events to prevent conflicts between commands and options (#494)
* Removing dependency on graceful-readlink
* Support setting name in #name function and make it chainable
* Add .vscode directory to .gitignore (Visual Studio Code metadata)
* Updated link to ruby commander in readme files
2.10.0 / 2017-06-19
==================
* Update .travis.yml. drop support for older node.js versions.
* Fix require arguments in README.md
* On SemVer you do not start from 0.0.1
* Add missing semi colon in readme
* Add save param to npm install
* node v6 travis test
* Update Readme_zh-CN.md
* Allow literal '--' to be passed-through as an argument
* Test subcommand alias help
* link build badge to master branch
* Support the alias of Git style sub-command
* added keyword commander for better search result on npm
* Fix Sub-Subcommands
* test node.js stable
* Fixes TypeError when a command has an option called `--description`
* Update README.md to make it beginner friendly and elaborate on the difference between angled and square brackets.
* Add chinese Readme file
2.9.0 / 2015-10-13
==================
* Add option `isDefault` to set default subcommand #415 @Qix-
* Add callback to allow filtering or post-processing of help text #434 @djulien
* Fix `undefined` text in help information close #414 #416 @zhiyelee
2.8.1 / 2015-04-22
==================
* Back out `support multiline description` Close #396 #397
2.8.0 / 2015-04-07
==================
* Add `process.execArg` support, execution args like `--harmony` will be passed to sub-commands #387 @DigitalIO @zhiyelee
* Fix bug in Git-style sub-commands #372 @zhiyelee
* Allow commands to be hidden from help #383 @tonylukasavage
* When git-style sub-commands are in use, yet none are called, display help #382 @claylo
* Add ability to specify arguments syntax for top-level command #258 @rrthomas
* Support multiline descriptions #208 @zxqfox
2.7.1 / 2015-03-11
==================
* Revert #347 (fix collisions when option and first arg have same name) which causes a bug in #367.
2.7.0 / 2015-03-09
==================
* Fix git-style bug when installed globally. Close #335 #349 @zhiyelee
* Fix collisions when option and first arg have same name. Close #346 #347 @tonylukasavage
* Add support for camelCase on `opts()`. Close #353 @nkzawa
* Add node.js 0.12 and io.js to travis.yml
* Allow RegEx options. #337 @palanik
* Fixes exit code when sub-command failing. Close #260 #332 @pirelenito
* git-style `bin` files in $PATH make sense. Close #196 #327 @zhiyelee
2.6.0 / 2014-12-30
==================
* added `Command#allowUnknownOption` method. Close #138 #318 @doozr @zhiyelee
* Add application description to the help msg. Close #112 @dalssoft
2.5.1 / 2014-12-15
==================
* fixed two bugs incurred by variadic arguments. Close #291 @Quentin01 #302 @zhiyelee
2.5.0 / 2014-10-24
==================
* add support for variadic arguments. Closes #277 @whitlockjc
2.4.0 / 2014-10-17
==================
* fixed a bug on executing the coercion function of subcommands option. Closes #270
* added `Command.prototype.name` to retrieve command name. Closes #264 #266 @tonylukasavage
* added `Command.prototype.opts` to retrieve all the options as a simple object of key-value pairs. Closes #262 @tonylukasavage
* fixed a bug on subcommand name. Closes #248 @jonathandelgado
* fixed function normalize doesn’t honor option terminator. Closes #216 @abbr
2.3.0 / 2014-07-16
==================
* add command alias'. Closes PR #210
* fix: Typos. Closes #99
* fix: Unused fs module. Closes #217
2.2.0 / 2014-03-29
==================
* add passing of previous option value
* fix: support subcommands on windows. Closes #142
* Now the defaultValue passed as the second argument of the coercion function.
2.1.0 / 2013-11-21
==================
* add: allow cflag style option params, unit test, fixes #174
2.0.0 / 2013-07-18
==================
* remove input methods (.prompt, .confirm, etc)
1.3.2 / 2013-07-18
==================
* add support for sub-commands to co-exist with the original command
1.3.1 / 2013-07-18
==================
* add quick .runningCommand hack so you can opt-out of other logic when running a sub command
1.3.0 / 2013-07-09
==================
* add EACCES error handling
* fix sub-command --help
1.2.0 / 2013-06-13
==================
* allow "-" hyphen as an option argument
* support for RegExp coercion
1.1.1 / 2012-11-20
==================
* add more sub-command padding
* fix .usage() when args are present. Closes #106
1.1.0 / 2012-11-16
==================
* add git-style executable subcommand support. Closes #94
1.0.5 / 2012-10-09
==================
* fix `--name` clobbering. Closes #92
* fix examples/help. Closes #89
1.0.4 / 2012-09-03
==================
* add `outputHelp()` method.
1.0.3 / 2012-08-30
==================
* remove invalid .version() defaulting
1.0.2 / 2012-08-24
==================
* add `--foo=bar` support [arv]
* fix password on node 0.8.8. Make backward compatible with 0.6 [focusaurus]
1.0.1 / 2012-08-03
==================
* fix issue #56
* fix tty.setRawMode(mode) was moved to tty.ReadStream#setRawMode() (i.e. process.stdin.setRawMode())
1.0.0 / 2012-07-05
==================
* add support for optional option descriptions
* add defaulting of `.version()` to package.json's version
0.6.1 / 2012-06-01
==================
* Added: append (yes or no) on confirmation
* Added: allow node.js v0.7.x
0.6.0 / 2012-04-10
==================
* Added `.prompt(obj, callback)` support. Closes #49
* Added default support to .choose(). Closes #41
* Fixed the choice example
0.5.1 / 2011-12-20
==================
* Fixed `password()` for recent nodes. Closes #36
0.5.0 / 2011-12-04
==================
* Added sub-command option support [itay]
0.4.3 / 2011-12-04
==================
* Fixed custom help ordering. Closes #32
0.4.2 / 2011-11-24
==================
* Added travis support
* Fixed: line-buffered input automatically trimmed. Closes #31
0.4.1 / 2011-11-18
==================
* Removed listening for "close" on --help
0.4.0 / 2011-11-15
==================
* Added support for `--`. Closes #24
0.3.3 / 2011-11-14
==================
* Fixed: wait for close event when writing help info [Jerry Hamlet]
0.3.2 / 2011-11-01
==================
* Fixed long flag definitions with values [felixge]
0.3.1 / 2011-10-31
==================
* Changed `--version` short flag to `-V` from `-v`
* Changed `.version()` so it's configurable [felixge]
0.3.0 / 2011-10-31
==================
* Added support for long flags only. Closes #18
0.2.1 / 2011-10-24
==================
* "node": ">= 0.4.x < 0.7.0". Closes #20
0.2.0 / 2011-09-26
==================
* Allow for defaults that are not just boolean. Default peassignment only occurs for --no-*, optional, and required arguments. [Jim Isaacs]
0.1.0 / 2011-08-24
==================
* Added support for custom `--help` output
0.0.5 / 2011-08-18
==================
* Changed: when the user enters nothing prompt for password again
* Fixed issue with passwords beginning with numbers [NuckChorris]
0.0.4 / 2011-08-15
==================
* Fixed `Commander#args`
0.0.3 / 2011-08-15
==================
* Added default option value support
0.0.2 / 2011-08-15
==================
* Added mask support to `Command#password(str[, mask], fn)`
* Added `Command#password(str, fn)`
0.0.1 / 2010-01-03
==================
* Initial release

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(The MIT License)
Copyright (c) 2011 TJ Holowaychuk <tj@vision-media.ca>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# Commander.js
[![Build Status](https://api.travis-ci.org/tj/commander.js.svg?branch=master)](http://travis-ci.org/tj/commander.js)
[![NPM Version](http://img.shields.io/npm/v/commander.svg?style=flat)](https://www.npmjs.org/package/commander)
[![NPM Downloads](https://img.shields.io/npm/dm/commander.svg?style=flat)](https://npmcharts.com/compare/commander?minimal=true)
[![Install Size](https://packagephobia.now.sh/badge?p=commander)](https://packagephobia.now.sh/result?p=commander)
[![Join the chat at https://gitter.im/tj/commander.js](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/tj/commander.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
The complete solution for [node.js](http://nodejs.org) command-line interfaces, inspired by Ruby's [commander](https://github.com/commander-rb/commander).
[API documentation](http://tj.github.com/commander.js/)
## Installation
$ npm install commander
## Option parsing
Options with commander are defined with the `.option()` method, also serving as documentation for the options. The example below parses args and options from `process.argv`, leaving remaining args as the `program.args` array which were not consumed by options.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.option('-p, --peppers', 'Add peppers')
.option('-P, --pineapple', 'Add pineapple')
.option('-b, --bbq-sauce', 'Add bbq sauce')
.option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')
.parse(process.argv);
console.log('you ordered a pizza with:');
if (program.peppers) console.log(' - peppers');
if (program.pineapple) console.log(' - pineapple');
if (program.bbqSauce) console.log(' - bbq');
console.log(' - %s cheese', program.cheese);
```
Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc.
Note that multi-word options starting with `--no` prefix negate the boolean value of the following word. For example, `--no-sauce` sets the value of `program.sauce` to false.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.option('--no-sauce', 'Remove sauce')
.parse(process.argv);
console.log('you ordered a pizza');
if (program.sauce) console.log(' with sauce');
else console.log(' without sauce');
```
To get string arguments from options you will need to use angle brackets <> for required inputs or square brackets [] for optional inputs.
e.g. ```.option('-m --myarg [myVar]', 'my super cool description')```
Then to access the input if it was passed in.
e.g. ```var myInput = program.myarg```
**NOTE**: If you pass a argument without using brackets the example above will return true and not the value passed in.
## Version option
Calling the `version` implicitly adds the `-V` and `--version` options to the command.
When either of these options is present, the command prints the version number and exits.
$ ./examples/pizza -V
0.0.1
If you want your program to respond to the `-v` option instead of the `-V` option, simply pass custom flags to the `version` method using the same syntax as the `option` method.
```js
program
.version('0.0.1', '-v, --version')
```
The version flags can be named anything, but the long option is required.
## Command-specific options
You can attach options to a command.
```js
#!/usr/bin/env node
var program = require('commander');
program
.command('rm <dir>')
.option('-r, --recursive', 'Remove recursively')
.action(function (dir, cmd) {
console.log('remove ' + dir + (cmd.recursive ? ' recursively' : ''))
})
program.parse(process.argv)
```
A command's options are validated when the command is used. Any unknown options will be reported as an error. However, if an action-based command does not define an action, then the options are not validated.
## Coercion
```js
function range(val) {
return val.split('..').map(Number);
}
function list(val) {
return val.split(',');
}
function collect(val, memo) {
memo.push(val);
return memo;
}
function increaseVerbosity(v, total) {
return total + 1;
}
program
.version('0.1.0')
.usage('[options] <file ...>')
.option('-i, --integer <n>', 'An integer argument', parseInt)
.option('-f, --float <n>', 'A float argument', parseFloat)
.option('-r, --range <a>..<b>', 'A range', range)
.option('-l, --list <items>', 'A list', list)
.option('-o, --optional [value]', 'An optional value')
.option('-c, --collect [value]', 'A repeatable value', collect, [])
.option('-v, --verbose', 'A value that can be increased', increaseVerbosity, 0)
.parse(process.argv);
console.log(' int: %j', program.integer);
console.log(' float: %j', program.float);
console.log(' optional: %j', program.optional);
program.range = program.range || [];
console.log(' range: %j..%j', program.range[0], program.range[1]);
console.log(' list: %j', program.list);
console.log(' collect: %j', program.collect);
console.log(' verbosity: %j', program.verbose);
console.log(' args: %j', program.args);
```
## Regular Expression
```js
program
.version('0.1.0')
.option('-s --size <size>', 'Pizza size', /^(large|medium|small)$/i, 'medium')
.option('-d --drink [drink]', 'Drink', /^(coke|pepsi|izze)$/i)
.parse(process.argv);
console.log(' size: %j', program.size);
console.log(' drink: %j', program.drink);
```
## Variadic arguments
The last argument of a command can be variadic, and only the last argument. To make an argument variadic you have to
append `...` to the argument name. Here is an example:
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.command('rmdir <dir> [otherDirs...]')
.action(function (dir, otherDirs) {
console.log('rmdir %s', dir);
if (otherDirs) {
otherDirs.forEach(function (oDir) {
console.log('rmdir %s', oDir);
});
}
});
program.parse(process.argv);
```
An `Array` is used for the value of a variadic argument. This applies to `program.args` as well as the argument passed
to your action as demonstrated above.
## Specify the argument syntax
```js
#!/usr/bin/env node
var program = require('commander');
program
.version('0.1.0')
.arguments('<cmd> [env]')
.action(function (cmd, env) {
cmdValue = cmd;
envValue = env;
});
program.parse(process.argv);
if (typeof cmdValue === 'undefined') {
console.error('no command given!');
process.exit(1);
}
console.log('command:', cmdValue);
console.log('environment:', envValue || "no environment given");
```
Angled brackets (e.g. `<cmd>`) indicate required input. Square brackets (e.g. `[env]`) indicate optional input.
## Git-style sub-commands
```js
// file: ./examples/pm
var program = require('commander');
program
.version('0.1.0')
.command('install [name]', 'install one or more packages')
.command('search [query]', 'search with optional query')
.command('list', 'list packages installed', {isDefault: true})
.parse(process.argv);
```
When `.command()` is invoked with a description argument, no `.action(callback)` should be called to handle sub-commands, otherwise there will be an error. This tells commander that you're going to use separate executables for sub-commands, much like `git(1)` and other popular tools.
The commander will try to search the executables in the directory of the entry script (like `./examples/pm`) with the name `program-command`, like `pm-install`, `pm-search`.
Options can be passed with the call to `.command()`. Specifying `true` for `opts.noHelp` will remove the subcommand from the generated help output. Specifying `true` for `opts.isDefault` will run the subcommand if no other subcommand is specified.
If the program is designed to be installed globally, make sure the executables have proper modes, like `755`.
### `--harmony`
You can enable `--harmony` option in two ways:
* Use `#! /usr/bin/env node --harmony` in the sub-commands scripts. Note some os version don’t support this pattern.
* Use the `--harmony` option when call the command, like `node --harmony examples/pm publish`. The `--harmony` option will be preserved when spawning sub-command process.
## Automated --help
The help information is auto-generated based on the information commander already knows about your program, so the following `--help` info is for free:
```
$ ./examples/pizza --help
Usage: pizza [options]
An application for pizzas ordering
Options:
-h, --help output usage information
-V, --version output the version number
-p, --peppers Add peppers
-P, --pineapple Add pineapple
-b, --bbq Add bbq sauce
-c, --cheese <type> Add the specified type of cheese [marble]
-C, --no-cheese You do not want any cheese
```
## Custom help
You can display arbitrary `-h, --help` information
by listening for "--help". Commander will automatically
exit once you are done so that the remainder of your program
does not execute causing undesired behaviors, for example
in the following executable "stuff" will not output when
`--help` is used.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.option('-f, --foo', 'enable some foo')
.option('-b, --bar', 'enable some bar')
.option('-B, --baz', 'enable some baz');
// must be before .parse() since
// node's emit() is immediate
program.on('--help', function(){
console.log('')
console.log('Examples:');
console.log(' $ custom-help --help');
console.log(' $ custom-help -h');
});
program.parse(process.argv);
console.log('stuff');
```
Yields the following help output when `node script-name.js -h` or `node script-name.js --help` are run:
```
Usage: custom-help [options]
Options:
-h, --help output usage information
-V, --version output the version number
-f, --foo enable some foo
-b, --bar enable some bar
-B, --baz enable some baz
Examples:
$ custom-help --help
$ custom-help -h
```
## .outputHelp(cb)
Output help information without exiting.
Optional callback cb allows post-processing of help text before it is displayed.
If you want to display help by default (e.g. if no command was provided), you can use something like:
```js
var program = require('commander');
var colors = require('colors');
program
.version('0.1.0')
.command('getstream [url]', 'get stream URL')
.parse(process.argv);
if (!process.argv.slice(2).length) {
program.outputHelp(make_red);
}
function make_red(txt) {
return colors.red(txt); //display the help text in red on the console
}
```
## .help(cb)
Output help information and exit immediately.
Optional callback cb allows post-processing of help text before it is displayed.
## Custom event listeners
You can execute custom actions by listening to command and option events.
```js
program.on('option:verbose', function () {
process.env.VERBOSE = this.verbose;
});
// error on unknown commands
program.on('command:*', function () {
console.error('Invalid command: %s\nSee --help for a list of available commands.', program.args.join(' '));
process.exit(1);
});
```
## Examples
```js
var program = require('commander');
program
.version('0.1.0')
.option('-C, --chdir <path>', 'change the working directory')
.option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
.option('-T, --no-tests', 'ignore test hook');
program
.command('setup [env]')
.description('run setup commands for all envs')
.option("-s, --setup_mode [mode]", "Which setup mode to use")
.action(function(env, options){
var mode = options.setup_mode || "normal";
env = env || 'all';
console.log('setup for %s env(s) with %s mode', env, mode);
});
program
.command('exec <cmd>')
.alias('ex')
.description('execute the given remote cmd')
.option("-e, --exec_mode <mode>", "Which exec mode to use")
.action(function(cmd, options){
console.log('exec "%s" using %s mode', cmd, options.exec_mode);
}).on('--help', function() {
console.log('');
console.log('Examples:');
console.log('');
console.log(' $ deploy exec sequential');
console.log(' $ deploy exec async');
});
program
.command('*')
.action(function(env){
console.log('deploying "%s"', env);
});
program.parse(process.argv);
```
More Demos can be found in the [examples](https://github.com/tj/commander.js/tree/master/examples) directory.
## License
[MIT](https://github.com/tj/commander.js/blob/master/LICENSE)

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{
"name": "commander",
"version": "2.20.3",
"description": "the complete solution for node.js command-line programs",
"keywords": [
"commander",
"command",
"option",
"parser"
],
"author": "TJ Holowaychuk <tj@vision-media.ca>",
"license": "MIT",
"repository": {
"type": "git",
"url": "https://github.com/tj/commander.js.git"
},
"scripts": {
"lint": "eslint index.js",
"test": "node test/run.js && npm run test-typings",
"test-typings": "tsc -p tsconfig.json"
},
"main": "index",
"files": [
"index.js",
"typings/index.d.ts"
],
"dependencies": {},
"devDependencies": {
"@types/node": "^12.7.8",
"eslint": "^6.4.0",
"should": "^13.2.3",
"sinon": "^7.5.0",
"standard": "^14.3.1",
"ts-node": "^8.4.1",
"typescript": "^3.6.3"
},
"typings": "typings/index.d.ts"
}

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// Type definitions for commander 2.11
// Project: https://github.com/visionmedia/commander.js
// Definitions by: Alan Agius <https://github.com/alan-agius4>, Marcelo Dezem <https://github.com/mdezem>, vvakame <https://github.com/vvakame>, Jules Randolph <https://github.com/sveinburne>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
declare namespace local {
class Option {
flags: string;
required: boolean;
optional: boolean;
bool: boolean;
short?: string;
long: string;
description: string;
/**
* Initialize a new `Option` with the given `flags` and `description`.
*
* @param {string} flags
* @param {string} [description]
*/
constructor(flags: string, description?: string);
}
class Command extends NodeJS.EventEmitter {
[key: string]: any;
args: string[];
/**
* Initialize a new `Command`.
*
* @param {string} [name]
*/
constructor(name?: string);
/**
* Set the program version to `str`.
*
* This method auto-registers the "-V, --version" flag
* which will print the version number when passed.
*
* @param {string} str
* @param {string} [flags]
* @returns {Command} for chaining
*/
version(str: string, flags?: string): Command;
/**
* Add command `name`.
*
* The `.action()` callback is invoked when the
* command `name` is specified via __ARGV__,
* and the remaining arguments are applied to the
* function for access.
*
* When the `name` is "*" an un-matched command
* will be passed as the first arg, followed by
* the rest of __ARGV__ remaining.
*
* @example
* program
* .version('0.0.1')
* .option('-C, --chdir <path>', 'change the working directory')
* .option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
* .option('-T, --no-tests', 'ignore test hook')
*
* program
* .command('setup')
* .description('run remote setup commands')
* .action(function() {
* console.log('setup');
* });
*
* program
* .command('exec <cmd>')
* .description('run the given remote command')
* .action(function(cmd) {
* console.log('exec "%s"', cmd);
* });
*
* program
* .command('teardown <dir> [otherDirs...]')
* .description('run teardown commands')
* .action(function(dir, otherDirs) {
* console.log('dir "%s"', dir);
* if (otherDirs) {
* otherDirs.forEach(function (oDir) {
* console.log('dir "%s"', oDir);
* });
* }
* });
*
* program
* .command('*')
* .description('deploy the given env')
* .action(function(env) {
* console.log('deploying "%s"', env);
* });
*
* program.parse(process.argv);
*
* @param {string} name
* @param {string} [desc] for git-style sub-commands
* @param {CommandOptions} [opts] command options
* @returns {Command} the new command
*/
command(name: string, desc?: string, opts?: commander.CommandOptions): Command;
/**
* Define argument syntax for the top-level command.
*
* @param {string} desc
* @returns {Command} for chaining
*/
arguments(desc: string): Command;
/**
* Parse expected `args`.
*
* For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`.
*
* @param {string[]} args
* @returns {Command} for chaining
*/
parseExpectedArgs(args: string[]): Command;
/**
* Register callback `fn` for the command.
*
* @example
* program
* .command('help')
* .description('display verbose help')
* .action(function() {
* // output help here
* });
*
* @param {(...args: any[]) => void} fn
* @returns {Command} for chaining
*/
action(fn: (...args: any[]) => void): Command;
/**
* Define option with `flags`, `description` and optional
* coercion `fn`.
*
* The `flags` string should contain both the short and long flags,
* separated by comma, a pipe or space. The following are all valid
* all will output this way when `--help` is used.
*
* "-p, --pepper"
* "-p|--pepper"
* "-p --pepper"
*
* @example
* // simple boolean defaulting to false
* program.option('-p, --pepper', 'add pepper');
*
* --pepper
* program.pepper
* // => Boolean
*
* // simple boolean defaulting to true
* program.option('-C, --no-cheese', 'remove cheese');
*
* program.cheese
* // => true
*
* --no-cheese
* program.cheese
* // => false
*
* // required argument
* program.option('-C, --chdir <path>', 'change the working directory');
*
* --chdir /tmp
* program.chdir
* // => "/tmp"
*
* // optional argument
* program.option('-c, --cheese [type]', 'add cheese [marble]');
*
* @param {string} flags
* @param {string} [description]
* @param {((arg1: any, arg2: any) => void) | RegExp} [fn] function or default
* @param {*} [defaultValue]
* @returns {Command} for chaining
*/
option(flags: string, description?: string, fn?: ((arg1: any, arg2: any) => void) | RegExp, defaultValue?: any): Command;
option(flags: string, description?: string, defaultValue?: any): Command;
/**
* Allow unknown options on the command line.
*
* @param {boolean} [arg] if `true` or omitted, no error will be thrown for unknown options.
* @returns {Command} for chaining
*/
allowUnknownOption(arg?: boolean): Command;
/**
* Parse `argv`, settings options and invoking commands when defined.
*
* @param {string[]} argv
* @returns {Command} for chaining
*/
parse(argv: string[]): Command;
/**
* Parse options from `argv` returning `argv` void of these options.
*
* @param {string[]} argv
* @returns {ParseOptionsResult}
*/
parseOptions(argv: string[]): commander.ParseOptionsResult;
/**
* Return an object containing options as key-value pairs
*
* @returns {{[key: string]: any}}
*/
opts(): { [key: string]: any };
/**
* Set the description to `str`.
*
* @param {string} str
* @param {{[argName: string]: string}} argsDescription
* @return {(Command | string)}
*/
description(str: string, argsDescription?: {[argName: string]: string}): Command;
description(): string;
/**
* Set an alias for the command.
*
* @param {string} alias
* @return {(Command | string)}
*/
alias(alias: string): Command;
alias(): string;
/**
* Set or get the command usage.
*
* @param {string} str
* @return {(Command | string)}
*/
usage(str: string): Command;
usage(): string;
/**
* Set the name of the command.
*
* @param {string} str
* @return {Command}
*/
name(str: string): Command;
/**
* Get the name of the command.
*
* @return {string}
*/
name(): string;
/**
* Output help information for this command.
*
* @param {(str: string) => string} [cb]
*/
outputHelp(cb?: (str: string) => string): void;
/** Output help information and exit.
*
* @param {(str: string) => string} [cb]
*/
help(cb?: (str: string) => string): never;
}
}
declare namespace commander {
type Command = local.Command
type Option = local.Option
interface CommandOptions {
noHelp?: boolean;
isDefault?: boolean;
}
interface ParseOptionsResult {
args: string[];
unknown: string[];
}
interface CommanderStatic extends Command {
Command: typeof local.Command;
Option: typeof local.Option;
CommandOptions: CommandOptions;
ParseOptionsResult: ParseOptionsResult;
}
}
declare const commander: commander.CommanderStatic;
export = commander;

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'use strict';
const path = require('path');
const fs = require('fs');
const commonDir = require('commondir');
const pkgDir = require('pkg-dir');
const makeDir = require('make-dir');
const {env, cwd} = process;
const isWritable = path => {
try {
fs.accessSync(path, fs.constants.W_OK);
return true;
} catch (_) {
return false;
}
};
function useDirectory(directory, options) {
if (options.create) {
makeDir.sync(directory);
}
if (options.thunk) {
return (...arguments_) => path.join(directory, ...arguments_);
}
return directory;
}
function getNodeModuleDirectory(directory) {
const nodeModules = path.join(directory, 'node_modules');
if (
!isWritable(nodeModules) &&
(fs.existsSync(nodeModules) || !isWritable(path.join(directory)))
) {
return;
}
return nodeModules;
}
module.exports = (options = {}) => {
if (env.CACHE_DIR && !['true', 'false', '1', '0'].includes(env.CACHE_DIR)) {
return useDirectory(path.join(env.CACHE_DIR, options.name), options);
}
let {cwd: directory = cwd()} = options;
if (options.files) {
directory = commonDir(directory, options.files);
}
directory = pkgDir.sync(directory);
if (!directory) {
return;
}
const nodeModules = getNodeModuleDirectory(directory);
if (!nodeModules) {
return undefined;
}
return useDirectory(path.join(directory, 'node_modules', '.cache', options.name), options);
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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{
"name": "find-cache-dir",
"version": "3.3.2",
"description": "Finds the common standard cache directory",
"license": "MIT",
"repository": "avajs/find-cache-dir",
"funding": "https://github.com/avajs/find-cache-dir?sponsor=1",
"engines": {
"node": ">=8"
},
"scripts": {
"test": "xo && nyc ava"
},
"files": [
"index.js"
],
"keywords": [
"cache",
"directory",
"dir",
"caching",
"find",
"search"
],
"dependencies": {
"commondir": "^1.0.1",
"make-dir": "^3.0.2",
"pkg-dir": "^4.1.0"
},
"devDependencies": {
"ava": "^2.4.0",
"coveralls": "^3.0.9",
"del": "^4.0.0",
"nyc": "^15.0.0",
"tempy": "^0.4.0",
"xo": "^0.25.3"
},
"nyc": {
"reporter": [
"lcov",
"text"
]
}
}

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# find-cache-dir [![Coverage Status](https://codecov.io/gh/avajs/find-cache-dir/branch/master/graph/badge.svg)](https://codecov.io/gh/avajs/find-cache-dir/branch/master)
> Finds the common standard cache directory
The [`nyc`](https://github.com/istanbuljs/nyc) and [`AVA`](https://ava.li) projects decided to standardize on a common directory structure for storing cache information:
```sh
# nyc
./node_modules/.cache/nyc
# ava
./node_modules/.cache/ava
# your-module
./node_modules/.cache/your-module
```
This module makes it easy to correctly locate the cache directory according to this shared spec. If this pattern becomes ubiquitous, clearing the cache for multiple dependencies becomes easy and consistent:
```
rm -rf ./node_modules/.cache
```
If you decide to adopt this pattern, please file a PR adding your name to the list of adopters below.
## Install
```
$ npm install find-cache-dir
```
## Usage
```js
const findCacheDir = require('find-cache-dir');
findCacheDir({name: 'unicorns'});
//=> '/user/path/node-modules/.cache/unicorns'
```
## API
### findCacheDir(options?)
Finds the cache directory using the supplied options. The algorithm checks for the `CACHE_DIR` environmental variable and uses it if it is not set to `true`, `false`, `1` or `0`. If one is not found, it tries to find a `package.json` file, searching every parent directory of the `cwd` specified (or implied from other options). It returns a `string` containing the absolute path to the cache directory, or `undefined` if `package.json` was never found or if the `node_modules` directory is unwritable.
#### options
Type: `object`
##### name
*Required*\
Type: `string`
Should be the same as your project name in `package.json`.
##### files
Type: `string[] | string`
An array of files that will be searched for a common parent directory. This common parent directory will be used in lieu of the `cwd` option below.
##### cwd
Type: `string`\
Default `process.cwd()`
Directory to start searching for a `package.json` from.
##### create
Type: `boolean`\
Default `false`
If `true`, the directory will be created synchronously before returning.
##### thunk
Type: `boolean`\
Default `false`
If `true`, this modifies the return type to be a function that is a thunk for `path.join(theFoundCacheDirectory)`.
```js
const thunk = findCacheDir({name: 'foo', thunk: true});
thunk();
//=> '/some/path/node_modules/.cache/foo'
thunk('bar.js')
//=> '/some/path/node_modules/.cache/foo/bar.js'
thunk('baz', 'quz.js')
//=> '/some/path/node_modules/.cache/foo/baz/quz.js'
```
This is helpful for actually putting actual files in the cache!
## Tips
- To test modules using `find-cache-dir`, set the `CACHE_DIR` environment variable to temporarily override the directory that is resolved.
## Adopters
- [`ava`](https://avajs.dev)
- [`nyc`](https://github.com/istanbuljs/nyc)
- [`storybook`](https://github.com/storybookjs/storybook)
- [`babel-loader`](https://github.com/babel/babel-loader)
- [`eslint-loader`](https://github.com/MoOx/eslint-loader)
- [More…](https://www.npmjs.com/browse/depended/find-cache-dir)
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-find_cache-dir?utm_source=npm-find-cache-dir&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>

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/**
Check if [`argv`](https://nodejs.org/docs/latest/api/process.html#process_process_argv) has a specific flag.
@param flag - CLI flag to look for. The `--` prefix is optional.
@param argv - CLI arguments. Default: `process.argv`.
@returns Whether the flag exists.
@example
```
// $ ts-node foo.ts -f --unicorn --foo=bar -- --rainbow
// foo.ts
import hasFlag = require('has-flag');
hasFlag('unicorn');
//=> true
hasFlag('--unicorn');
//=> true
hasFlag('f');
//=> true
hasFlag('-f');
//=> true
hasFlag('foo=bar');
//=> true
hasFlag('foo');
//=> false
hasFlag('rainbow');
//=> false
```
*/
declare function hasFlag(flag: string, argv?: string[]): boolean;
export = hasFlag;

8
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@@ -0,0 +1,8 @@
'use strict';
module.exports = (flag, argv = process.argv) => {
const prefix = flag.startsWith('-') ? '' : (flag.length === 1 ? '-' : '--');
const position = argv.indexOf(prefix + flag);
const terminatorPosition = argv.indexOf('--');
return position !== -1 && (terminatorPosition === -1 || position < terminatorPosition);
};

9
node_modules/terser-webpack-plugin/node_modules/has-flag/license generated vendored Normal file
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@@ -0,0 +1,9 @@
MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

46
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@@ -0,0 +1,46 @@
{
"name": "has-flag",
"version": "4.0.0",
"description": "Check if argv has a specific flag",
"license": "MIT",
"repository": "sindresorhus/has-flag",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=8"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"has",
"check",
"detect",
"contains",
"find",
"flag",
"cli",
"command-line",
"argv",
"process",
"arg",
"args",
"argument",
"arguments",
"getopt",
"minimist",
"optimist"
],
"devDependencies": {
"ava": "^1.4.1",
"tsd": "^0.7.2",
"xo": "^0.24.0"
}
}

89
node_modules/terser-webpack-plugin/node_modules/has-flag/readme.md generated vendored Normal file
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# has-flag [![Build Status](https://travis-ci.org/sindresorhus/has-flag.svg?branch=master)](https://travis-ci.org/sindresorhus/has-flag)
> Check if [`argv`](https://nodejs.org/docs/latest/api/process.html#process_process_argv) has a specific flag
Correctly stops looking after an `--` argument terminator.
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-has-flag?utm_source=npm-has-flag&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>
---
## Install
```
$ npm install has-flag
```
## Usage
```js
// foo.js
const hasFlag = require('has-flag');
hasFlag('unicorn');
//=> true
hasFlag('--unicorn');
//=> true
hasFlag('f');
//=> true
hasFlag('-f');
//=> true
hasFlag('foo=bar');
//=> true
hasFlag('foo');
//=> false
hasFlag('rainbow');
//=> false
```
```
$ node foo.js -f --unicorn --foo=bar -- --rainbow
```
## API
### hasFlag(flag, [argv])
Returns a boolean for whether the flag exists.
#### flag
Type: `string`
CLI flag to look for. The `--` prefix is optional.
#### argv
Type: `string[]`<br>
Default: `process.argv`
CLI arguments.
## Security
To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

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@@ -0,0 +1,21 @@
MIT License
Copyright (c) Facebook, Inc. and its affiliates.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

231
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# jest-worker
Module for executing heavy tasks under forked processes in parallel, by providing a `Promise` based interface, minimum overhead, and bound workers.
The module works by providing an absolute path of the module to be loaded in all forked processes. Files relative to a node module are also accepted. All methods are exposed on the parent process as promises, so they can be `await`'ed. Child (worker) methods can either be synchronous or asynchronous.
The module also implements support for bound workers. Binding a worker means that, based on certain parameters, the same task will always be executed by the same worker. The way bound workers work is by using the returned string of the `computeWorkerKey` method. If the string was used before for a task, the call will be queued to the related worker that processed the task earlier; if not, it will be executed by the first available worker, then sticked to the worker that executed it; so the next time it will be processed by the same worker. If you have no preference on the worker executing the task, but you have defined a `computeWorkerKey` method because you want _some_ of the tasks to be sticked, you can return `null` from it.
The list of exposed methods can be explicitly provided via the `exposedMethods` option. If it is not provided, it will be obtained by requiring the child module into the main process, and analyzed via reflection. Check the "minimal example" section for a valid one.
## Install
```sh
$ yarn add jest-worker
```
## Example
This example covers the minimal usage:
### File `parent.js`
```javascript
import JestWorker from 'jest-worker';
async function main() {
const worker = new JestWorker(require.resolve('./Worker'));
const result = await worker.hello('Alice'); // "Hello, Alice"
}
main();
```
### File `worker.js`
```javascript
export function hello(param) {
return 'Hello, ' + param;
}
```
## Experimental worker
Node 10 shipped with [worker-threads](https://nodejs.org/api/worker_threads.html), a "threading API" that uses SharedArrayBuffers to communicate between the main process and its child threads. This experimental Node feature can significantly improve the communication time between parent and child processes in `jest-worker`.
Since `worker_threads` are considered experimental in Node, you have to opt-in to this behavior by passing `enableWorkerThreads: true` when instantiating the worker. While the feature was unflagged in Node 11.7.0, you'll need to run the Node process with the `--experimental-worker` flag for Node 10.
## API
The only exposed method is a constructor (`JestWorker`) that is initialized by passing the worker path, plus an options object.
### `workerPath: string` (required)
Node module name or absolute path of the file to be loaded in the child processes. Use `require.resolve` to transform a relative path into an absolute one.
### `options: Object` (optional)
#### `exposedMethods: $ReadOnlyArray<string>` (optional)
List of method names that can be called on the child processes from the parent process. You cannot expose any method named like a public `Worker` method, or starting with `_`. If you use method auto-discovery, then these methods will not be exposed, even if they exist.
#### `numWorkers: number` (optional)
Amount of workers to spawn. Defaults to the number of CPUs minus 1.
#### `maxRetries: number` (optional)
Maximum amount of times that a dead child can be re-spawned, per call. Defaults to `3`, pass `Infinity` to allow endless retries.
#### `forkOptions: Object` (optional)
Allow customizing all options passed to `childProcess.fork`. By default, some values are set (`cwd`, `env` and `execArgv`), but you can override them and customize the rest. For a list of valid values, check [the Node documentation](https://nodejs.org/api/child_process.html#child_process_child_process_fork_modulepath_args_options).
#### `computeWorkerKey: (method: string, ...args: Array<any>) => ?string` (optional)
Every time a method exposed via the API is called, `computeWorkerKey` is also called in order to bound the call to a worker. This is useful for workers that are able to cache the result or part of it. You bound calls to a worker by making `computeWorkerKey` return the same identifier for all different calls. If you do not want to bind the call to any worker, return `null`.
The callback you provide is called with the method name, plus all the rest of the arguments of the call. Thus, you have full control to decide what to return. Check a practical example on bound workers under the "bound worker usage" section.
By default, no process is bound to any worker.
#### `setupArgs: Array<mixed>` (optional)
The arguments that will be passed to the `setup` method during initialization.
#### `WorkerPool: (workerPath: string, options?: WorkerPoolOptions) => WorkerPoolInterface` (optional)
Provide a custom worker pool to be used for spawning child processes. By default, Jest will use a node thread pool if available and fall back to child process threads.
#### `enableWorkerThreads: boolean` (optional)
`jest-worker` will automatically detect if `worker_threads` are available, but will not use them unless passed `enableWorkerThreads: true`.
## JestWorker
### Methods
The returned `JestWorker` instance has all the exposed methods, plus some additional ones to interact with the workers itself:
#### `getStdout(): Readable`
Returns a `ReadableStream` where the standard output of all workers is piped. Note that the `silent` option of the child workers must be set to `true` to make it work. This is the default set by `jest-worker`, but keep it in mind when overriding options through `forkOptions`.
#### `getStderr(): Readable`
Returns a `ReadableStream` where the standard error of all workers is piped. Note that the `silent` option of the child workers must be set to `true` to make it work. This is the default set by `jest-worker`, but keep it in mind when overriding options through `forkOptions`.
#### `end()`
Finishes the workers by killing all workers. No further calls can be done to the `Worker` instance.
Returns a Promise that resolves with `{ forceExited: boolean }` once all workers are dead. If `forceExited` is `true`, at least one of the workers did not exit gracefully, which likely happened because it executed a leaky task that left handles open. This should be avoided, force exiting workers is a last resort to prevent creating lots of orphans.
**Note:**
`await`ing the `end()` Promise immediately after the workers are no longer needed before proceeding to do other useful things in your program may not be a good idea. If workers have to be force exited, `jest-worker` may go through multiple stages of force exiting (e.g. SIGTERM, later SIGKILL) and give the worker overall around 1 second time to exit on its own. During this time, your program will wait, even though it may not be necessary that all workers are dead before continuing execution.
Consider deliberately leaving this Promise floating (unhandled resolution). After your program has done the rest of its work and is about to exit, the Node process will wait for the Promise to resolve after all workers are dead as the last event loop task. That way you parallelized computation time of your program and waiting time and you didn't delay the outputs of your program unnecessarily.
### Worker IDs
Each worker has a unique id (index that starts with `1`), which is available inside the worker as `process.env.JEST_WORKER_ID`.
## Setting up and tearing down the child process
The child process can define two special methods (both of them can be asynchronous):
- `setup()`: If defined, it's executed before the first call to any method in the child.
- `teardown()`: If defined, it's executed when the farm ends.
# More examples
## Standard usage
This example covers the standard usage:
### File `parent.js`
```javascript
import JestWorker from 'jest-worker';
async function main() {
const myWorker = new JestWorker(require.resolve('./Worker'), {
exposedMethods: ['foo', 'bar', 'getWorkerId'],
numWorkers: 4,
});
console.log(await myWorker.foo('Alice')); // "Hello from foo: Alice"
console.log(await myWorker.bar('Bob')); // "Hello from bar: Bob"
console.log(await myWorker.getWorkerId()); // "3" -> this message has sent from the 3rd worker
const {forceExited} = await myWorker.end();
if (forceExited) {
console.error('Workers failed to exit gracefully');
}
}
main();
```
### File `worker.js`
```javascript
export function foo(param) {
return 'Hello from foo: ' + param;
}
export function bar(param) {
return 'Hello from bar: ' + param;
}
export function getWorkerId() {
return process.env.JEST_WORKER_ID;
}
```
## Bound worker usage:
This example covers the usage with a `computeWorkerKey` method:
### File `parent.js`
```javascript
import JestWorker from 'jest-worker';
async function main() {
const myWorker = new JestWorker(require.resolve('./Worker'), {
computeWorkerKey: (method, filename) => filename,
});
// Transform the given file, within the first available worker.
console.log(await myWorker.transform('/tmp/foo.js'));
// Wait a bit.
await sleep(10000);
// Transform the same file again. Will immediately return because the
// transformed file is cached in the worker, and `computeWorkerKey` ensures
// the same worker that processed the file the first time will process it now.
console.log(await myWorker.transform('/tmp/foo.js'));
const {forceExited} = await myWorker.end();
if (forceExited) {
console.error('Workers failed to exit gracefully');
}
}
main();
```
### File `worker.js`
```javascript
import babel from '@babel/core';
const cache = Object.create(null);
export function transform(filename) {
if (cache[filename]) {
return cache[filename];
}
// jest-worker can handle both immediate results and thenables. If a
// thenable is returned, it will be await'ed until it resolves.
return babel.transformFileAsync(filename).then(result => {
cache[filename] = result;
return result;
});
}
```

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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import { FarmOptions, PromiseWithCustomMessage } from './types';
export default class Farm {
private _computeWorkerKey;
private _cacheKeys;
private _callback;
private _last;
private _locks;
private _numOfWorkers;
private _offset;
private _queue;
constructor(numOfWorkers: number, callback: Function, computeWorkerKey?: FarmOptions['computeWorkerKey']);
doWork(method: string, ...args: Array<unknown>): PromiseWithCustomMessage<unknown>;
private _getNextTask;
private _process;
private _enqueue;
private _push;
private _lock;
private _unlock;
private _isLocked;
}

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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
var _types = require('./types');
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
class Farm {
constructor(numOfWorkers, callback, computeWorkerKey) {
_defineProperty(this, '_computeWorkerKey', void 0);
_defineProperty(this, '_cacheKeys', void 0);
_defineProperty(this, '_callback', void 0);
_defineProperty(this, '_last', void 0);
_defineProperty(this, '_locks', void 0);
_defineProperty(this, '_numOfWorkers', void 0);
_defineProperty(this, '_offset', void 0);
_defineProperty(this, '_queue', void 0);
this._cacheKeys = Object.create(null);
this._callback = callback;
this._last = [];
this._locks = [];
this._numOfWorkers = numOfWorkers;
this._offset = 0;
this._queue = [];
if (computeWorkerKey) {
this._computeWorkerKey = computeWorkerKey;
}
}
doWork(method, ...args) {
const customMessageListeners = new Set();
const addCustomMessageListener = listener => {
customMessageListeners.add(listener);
return () => {
customMessageListeners.delete(listener);
};
};
const onCustomMessage = message => {
customMessageListeners.forEach(listener => listener(message));
};
const promise = new Promise((resolve, reject) => {
const computeWorkerKey = this._computeWorkerKey;
const request = [_types.CHILD_MESSAGE_CALL, false, method, args];
let worker = null;
let hash = null;
if (computeWorkerKey) {
hash = computeWorkerKey.call(this, method, ...args);
worker = hash == null ? null : this._cacheKeys[hash];
}
const onStart = worker => {
if (hash != null) {
this._cacheKeys[hash] = worker;
}
};
const onEnd = (error, result) => {
customMessageListeners.clear();
if (error) {
reject(error);
} else {
resolve(result);
}
};
const task = {
onCustomMessage,
onEnd,
onStart,
request
};
if (worker) {
this._enqueue(task, worker.getWorkerId());
} else {
this._push(task);
}
});
promise.UNSTABLE_onCustomMessage = addCustomMessageListener;
return promise;
}
_getNextTask(workerId) {
let queueHead = this._queue[workerId];
while (queueHead && queueHead.task.request[1]) {
queueHead = queueHead.next || null;
}
this._queue[workerId] = queueHead;
return queueHead && queueHead.task;
}
_process(workerId) {
if (this._isLocked(workerId)) {
return this;
}
const task = this._getNextTask(workerId);
if (!task) {
return this;
}
const onEnd = (error, result) => {
task.onEnd(error, result);
this._unlock(workerId);
this._process(workerId);
};
task.request[1] = true;
this._lock(workerId);
this._callback(
workerId,
task.request,
task.onStart,
onEnd,
task.onCustomMessage
);
return this;
}
_enqueue(task, workerId) {
const item = {
next: null,
task
};
if (task.request[1]) {
return this;
}
if (this._queue[workerId]) {
this._last[workerId].next = item;
} else {
this._queue[workerId] = item;
}
this._last[workerId] = item;
this._process(workerId);
return this;
}
_push(task) {
for (let i = 0; i < this._numOfWorkers; i++) {
this._enqueue(task, (this._offset + i) % this._numOfWorkers);
}
this._offset++;
return this;
}
_lock(workerId) {
this._locks[workerId] = true;
}
_unlock(workerId) {
this._locks[workerId] = false;
}
_isLocked(workerId) {
return this._locks[workerId];
}
}
exports.default = Farm;

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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import BaseWorkerPool from './base/BaseWorkerPool';
import type { ChildMessage, OnCustomMessage, OnEnd, OnStart, WorkerInterface, WorkerOptions, WorkerPoolInterface } from './types';
declare class WorkerPool extends BaseWorkerPool implements WorkerPoolInterface {
send(workerId: number, request: ChildMessage, onStart: OnStart, onEnd: OnEnd, onCustomMessage: OnCustomMessage): void;
createWorker(workerOptions: WorkerOptions): WorkerInterface;
}
export default WorkerPool;

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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
var _BaseWorkerPool = _interopRequireDefault(require('./base/BaseWorkerPool'));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const canUseWorkerThreads = () => {
try {
require('worker_threads');
return true;
} catch {
return false;
}
};
class WorkerPool extends _BaseWorkerPool.default {
send(workerId, request, onStart, onEnd, onCustomMessage) {
this.getWorkerById(workerId).send(request, onStart, onEnd, onCustomMessage);
}
createWorker(workerOptions) {
let Worker;
if (this._options.enableWorkerThreads && canUseWorkerThreads()) {
Worker = require('./workers/NodeThreadsWorker').default;
} else {
Worker = require('./workers/ChildProcessWorker').default;
}
return new Worker(workerOptions);
}
}
var _default = WorkerPool;
exports.default = _default;

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node_modules/terser-webpack-plugin/node_modules/jest-worker/build/base/BaseWorkerPool.d.ts generated vendored Normal file
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@@ -0,0 +1,21 @@
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
import { PoolExitResult, WorkerInterface, WorkerOptions, WorkerPoolOptions } from '../types';
export default class BaseWorkerPool {
private readonly _stderr;
private readonly _stdout;
protected readonly _options: WorkerPoolOptions;
private readonly _workers;
constructor(workerPath: string, options: WorkerPoolOptions);
getStderr(): NodeJS.ReadableStream;
getStdout(): NodeJS.ReadableStream;
getWorkers(): Array<WorkerInterface>;
getWorkerById(workerId: number): WorkerInterface;
createWorker(_workerOptions: WorkerOptions): WorkerInterface;
end(): Promise<PoolExitResult>;
}

209
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@@ -0,0 +1,209 @@
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
function path() {
const data = _interopRequireWildcard(require('path'));
path = function () {
return data;
};
return data;
}
function _mergeStream() {
const data = _interopRequireDefault(require('merge-stream'));
_mergeStream = function () {
return data;
};
return data;
}
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
function _getRequireWildcardCache() {
if (typeof WeakMap !== 'function') return null;
var cache = new WeakMap();
_getRequireWildcardCache = function () {
return cache;
};
return cache;
}
function _interopRequireWildcard(obj) {
if (obj && obj.__esModule) {
return obj;
}
if (obj === null || (typeof obj !== 'object' && typeof obj !== 'function')) {
return {default: obj};
}
var cache = _getRequireWildcardCache();
if (cache && cache.has(obj)) {
return cache.get(obj);
}
var newObj = {};
var hasPropertyDescriptor =
Object.defineProperty && Object.getOwnPropertyDescriptor;
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var desc = hasPropertyDescriptor
? Object.getOwnPropertyDescriptor(obj, key)
: null;
if (desc && (desc.get || desc.set)) {
Object.defineProperty(newObj, key, desc);
} else {
newObj[key] = obj[key];
}
}
}
newObj.default = obj;
if (cache) {
cache.set(obj, newObj);
}
return newObj;
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
// How long to wait for the child process to terminate
// after CHILD_MESSAGE_END before sending force exiting.
const FORCE_EXIT_DELAY = 500;
/* istanbul ignore next */
const emptyMethod = () => {};
class BaseWorkerPool {
constructor(workerPath, options) {
_defineProperty(this, '_stderr', void 0);
_defineProperty(this, '_stdout', void 0);
_defineProperty(this, '_options', void 0);
_defineProperty(this, '_workers', void 0);
this._options = options;
this._workers = new Array(options.numWorkers);
if (!path().isAbsolute(workerPath)) {
workerPath = require.resolve(workerPath);
}
const stdout = (0, _mergeStream().default)();
const stderr = (0, _mergeStream().default)();
const {forkOptions, maxRetries, resourceLimits, setupArgs} = options;
for (let i = 0; i < options.numWorkers; i++) {
const workerOptions = {
forkOptions,
maxRetries,
resourceLimits,
setupArgs,
workerId: i,
workerPath
};
const worker = this.createWorker(workerOptions);
const workerStdout = worker.getStdout();
const workerStderr = worker.getStderr();
if (workerStdout) {
stdout.add(workerStdout);
}
if (workerStderr) {
stderr.add(workerStderr);
}
this._workers[i] = worker;
}
this._stdout = stdout;
this._stderr = stderr;
}
getStderr() {
return this._stderr;
}
getStdout() {
return this._stdout;
}
getWorkers() {
return this._workers;
}
getWorkerById(workerId) {
return this._workers[workerId];
}
createWorker(_workerOptions) {
throw Error('Missing method createWorker in WorkerPool');
}
async end() {
// We do not cache the request object here. If so, it would only be only
// processed by one of the workers, and we want them all to close.
const workerExitPromises = this._workers.map(async worker => {
worker.send(
[_types().CHILD_MESSAGE_END, false],
emptyMethod,
emptyMethod,
emptyMethod
); // Schedule a force exit in case worker fails to exit gracefully so
// await worker.waitForExit() never takes longer than FORCE_EXIT_DELAY
let forceExited = false;
const forceExitTimeout = setTimeout(() => {
worker.forceExit();
forceExited = true;
}, FORCE_EXIT_DELAY);
await worker.waitForExit(); // Worker ideally exited gracefully, don't send force exit then
clearTimeout(forceExitTimeout);
return forceExited;
});
const workerExits = await Promise.all(workerExitPromises);
return workerExits.reduce(
(result, forceExited) => ({
forceExited: result.forceExited || forceExited
}),
{
forceExited: false
}
);
}
}
exports.default = BaseWorkerPool;

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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
import type { FarmOptions, PoolExitResult, PromiseWithCustomMessage } from './types';
export { default as messageParent } from './workers/messageParent';
/**
* The Jest farm (publicly called "Worker") is a class that allows you to queue
* methods across multiple child processes, in order to parallelize work. This
* is done by providing an absolute path to a module that will be loaded on each
* of the child processes, and bridged to the main process.
*
* Bridged methods are specified by using the "exposedMethods" property of the
* "options" object. This is an array of strings, where each of them corresponds
* to the exported name in the loaded module.
*
* You can also control the amount of workers by using the "numWorkers" property
* of the "options" object, and the settings passed to fork the process through
* the "forkOptions" property. The amount of workers defaults to the amount of
* CPUS minus one.
*
* Queueing calls can be done in two ways:
* - Standard method: calls will be redirected to the first available worker,
* so they will get executed as soon as they can.
*
* - Sticky method: if a "computeWorkerKey" method is provided within the
* config, the resulting string of this method will be used as a key.
* Every time this key is returned, it is guaranteed that your job will be
* processed by the same worker. This is specially useful if your workers
* are caching results.
*/
export default class JestWorker {
private _ending;
private _farm;
private _options;
private _workerPool;
constructor(workerPath: string, options?: FarmOptions);
private _bindExposedWorkerMethods;
private _callFunctionWithArgs;
getStderr(): NodeJS.ReadableStream;
getStdout(): NodeJS.ReadableStream;
end(): Promise<PoolExitResult>;
}
export type { PromiseWithCustomMessage };

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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
Object.defineProperty(exports, 'messageParent', {
enumerable: true,
get: function () {
return _messageParent.default;
}
});
exports.default = void 0;
function _os() {
const data = require('os');
_os = function () {
return data;
};
return data;
}
var _Farm = _interopRequireDefault(require('./Farm'));
var _WorkerPool = _interopRequireDefault(require('./WorkerPool'));
var _messageParent = _interopRequireDefault(require('./workers/messageParent'));
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function getExposedMethods(workerPath, options) {
let exposedMethods = options.exposedMethods; // If no methods list is given, try getting it by auto-requiring the module.
if (!exposedMethods) {
const module = require(workerPath);
exposedMethods = Object.keys(module).filter(
// @ts-expect-error: no index
name => typeof module[name] === 'function'
);
if (typeof module === 'function') {
exposedMethods = [...exposedMethods, 'default'];
}
}
return exposedMethods;
}
/**
* The Jest farm (publicly called "Worker") is a class that allows you to queue
* methods across multiple child processes, in order to parallelize work. This
* is done by providing an absolute path to a module that will be loaded on each
* of the child processes, and bridged to the main process.
*
* Bridged methods are specified by using the "exposedMethods" property of the
* "options" object. This is an array of strings, where each of them corresponds
* to the exported name in the loaded module.
*
* You can also control the amount of workers by using the "numWorkers" property
* of the "options" object, and the settings passed to fork the process through
* the "forkOptions" property. The amount of workers defaults to the amount of
* CPUS minus one.
*
* Queueing calls can be done in two ways:
* - Standard method: calls will be redirected to the first available worker,
* so they will get executed as soon as they can.
*
* - Sticky method: if a "computeWorkerKey" method is provided within the
* config, the resulting string of this method will be used as a key.
* Every time this key is returned, it is guaranteed that your job will be
* processed by the same worker. This is specially useful if your workers
* are caching results.
*/
class JestWorker {
constructor(workerPath, options) {
var _this$_options$enable,
_this$_options$forkOp,
_this$_options$maxRet,
_this$_options$numWor,
_this$_options$resour,
_this$_options$setupA;
_defineProperty(this, '_ending', void 0);
_defineProperty(this, '_farm', void 0);
_defineProperty(this, '_options', void 0);
_defineProperty(this, '_workerPool', void 0);
this._options = {...options};
this._ending = false;
const workerPoolOptions = {
enableWorkerThreads:
(_this$_options$enable = this._options.enableWorkerThreads) !== null &&
_this$_options$enable !== void 0
? _this$_options$enable
: false,
forkOptions:
(_this$_options$forkOp = this._options.forkOptions) !== null &&
_this$_options$forkOp !== void 0
? _this$_options$forkOp
: {},
maxRetries:
(_this$_options$maxRet = this._options.maxRetries) !== null &&
_this$_options$maxRet !== void 0
? _this$_options$maxRet
: 3,
numWorkers:
(_this$_options$numWor = this._options.numWorkers) !== null &&
_this$_options$numWor !== void 0
? _this$_options$numWor
: Math.max((0, _os().cpus)().length - 1, 1),
resourceLimits:
(_this$_options$resour = this._options.resourceLimits) !== null &&
_this$_options$resour !== void 0
? _this$_options$resour
: {},
setupArgs:
(_this$_options$setupA = this._options.setupArgs) !== null &&
_this$_options$setupA !== void 0
? _this$_options$setupA
: []
};
if (this._options.WorkerPool) {
// @ts-expect-error: constructor target any?
this._workerPool = new this._options.WorkerPool(
workerPath,
workerPoolOptions
);
} else {
this._workerPool = new _WorkerPool.default(workerPath, workerPoolOptions);
}
this._farm = new _Farm.default(
workerPoolOptions.numWorkers,
this._workerPool.send.bind(this._workerPool),
this._options.computeWorkerKey
);
this._bindExposedWorkerMethods(workerPath, this._options);
}
_bindExposedWorkerMethods(workerPath, options) {
getExposedMethods(workerPath, options).forEach(name => {
if (name.startsWith('_')) {
return;
}
if (this.constructor.prototype.hasOwnProperty(name)) {
throw new TypeError('Cannot define a method called ' + name);
} // @ts-expect-error: dynamic extension of the class instance is expected.
this[name] = this._callFunctionWithArgs.bind(this, name);
});
}
_callFunctionWithArgs(method, ...args) {
if (this._ending) {
throw new Error('Farm is ended, no more calls can be done to it');
}
return this._farm.doWork(method, ...args);
}
getStderr() {
return this._workerPool.getStderr();
}
getStdout() {
return this._workerPool.getStdout();
}
async end() {
if (this._ending) {
throw new Error('Farm is ended, no more calls can be done to it');
}
this._ending = true;
return this._workerPool.end();
}
}
exports.default = JestWorker;

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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
import type { ForkOptions } from 'child_process';
import type { EventEmitter } from 'events';
export interface ResourceLimits {
maxYoungGenerationSizeMb?: number;
maxOldGenerationSizeMb?: number;
codeRangeSizeMb?: number;
}
export declare const CHILD_MESSAGE_INITIALIZE: 0;
export declare const CHILD_MESSAGE_CALL: 1;
export declare const CHILD_MESSAGE_END: 2;
export declare const PARENT_MESSAGE_OK: 0;
export declare const PARENT_MESSAGE_CLIENT_ERROR: 1;
export declare const PARENT_MESSAGE_SETUP_ERROR: 2;
export declare const PARENT_MESSAGE_CUSTOM: 3;
export declare type PARENT_MESSAGE_ERROR = typeof PARENT_MESSAGE_CLIENT_ERROR | typeof PARENT_MESSAGE_SETUP_ERROR;
export interface WorkerPoolInterface {
getStderr(): NodeJS.ReadableStream;
getStdout(): NodeJS.ReadableStream;
getWorkers(): Array<WorkerInterface>;
createWorker(options: WorkerOptions): WorkerInterface;
send(workerId: number, request: ChildMessage, onStart: OnStart, onEnd: OnEnd, onCustomMessage: OnCustomMessage): void;
end(): Promise<PoolExitResult>;
}
export interface WorkerInterface {
send(request: ChildMessage, onProcessStart: OnStart, onProcessEnd: OnEnd, onCustomMessage: OnCustomMessage): void;
waitForExit(): Promise<void>;
forceExit(): void;
getWorkerId(): number;
getStderr(): NodeJS.ReadableStream | null;
getStdout(): NodeJS.ReadableStream | null;
}
export declare type PoolExitResult = {
forceExited: boolean;
};
export interface PromiseWithCustomMessage<T> extends Promise<T> {
UNSTABLE_onCustomMessage?: (listener: OnCustomMessage) => () => void;
}
export type { ForkOptions };
export declare type FarmOptions = {
computeWorkerKey?: (method: string, ...args: Array<unknown>) => string | null;
exposedMethods?: ReadonlyArray<string>;
forkOptions?: ForkOptions;
resourceLimits?: ResourceLimits;
setupArgs?: Array<unknown>;
maxRetries?: number;
numWorkers?: number;
WorkerPool?: (workerPath: string, options?: WorkerPoolOptions) => WorkerPoolInterface;
enableWorkerThreads?: boolean;
};
export declare type WorkerPoolOptions = {
setupArgs: Array<unknown>;
forkOptions: ForkOptions;
resourceLimits: ResourceLimits;
maxRetries: number;
numWorkers: number;
enableWorkerThreads: boolean;
};
export declare type WorkerOptions = {
forkOptions: ForkOptions;
resourceLimits: ResourceLimits;
setupArgs: Array<unknown>;
maxRetries: number;
workerId: number;
workerPath: string;
};
export declare type MessagePort = typeof EventEmitter & {
postMessage(message: unknown): void;
};
export declare type MessageChannel = {
port1: MessagePort;
port2: MessagePort;
};
export declare type ChildMessageInitialize = [
typeof CHILD_MESSAGE_INITIALIZE,
boolean,
string,
// file
Array<unknown> | undefined,
// setupArgs
MessagePort | undefined
];
export declare type ChildMessageCall = [
typeof CHILD_MESSAGE_CALL,
boolean,
string,
Array<unknown>
];
export declare type ChildMessageEnd = [
typeof CHILD_MESSAGE_END,
boolean
];
export declare type ChildMessage = ChildMessageInitialize | ChildMessageCall | ChildMessageEnd;
export declare type ParentMessageCustom = [
typeof PARENT_MESSAGE_CUSTOM,
unknown
];
export declare type ParentMessageOk = [
typeof PARENT_MESSAGE_OK,
unknown
];
export declare type ParentMessageError = [
PARENT_MESSAGE_ERROR,
string,
string,
string,
unknown
];
export declare type ParentMessage = ParentMessageOk | ParentMessageError | ParentMessageCustom;
export declare type OnStart = (worker: WorkerInterface) => void;
export declare type OnEnd = (err: Error | null, result: unknown) => void;
export declare type OnCustomMessage = (message: Array<unknown> | unknown) => void;
export declare type QueueChildMessage = {
request: ChildMessage;
onStart: OnStart;
onEnd: OnEnd;
onCustomMessage: OnCustomMessage;
};
export declare type QueueItem = {
task: QueueChildMessage;
next: QueueItem | null;
};

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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.PARENT_MESSAGE_CUSTOM = exports.PARENT_MESSAGE_SETUP_ERROR = exports.PARENT_MESSAGE_CLIENT_ERROR = exports.PARENT_MESSAGE_OK = exports.CHILD_MESSAGE_END = exports.CHILD_MESSAGE_CALL = exports.CHILD_MESSAGE_INITIALIZE = void 0;
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// import type {ResourceLimits} from 'worker_threads';
// This is not present in the Node 12 typings
// Because of the dynamic nature of a worker communication process, all messages
// coming from any of the other processes cannot be typed. Thus, many types
// include "unknown" as a TS type, which is (unfortunately) correct here.
const CHILD_MESSAGE_INITIALIZE = 0;
exports.CHILD_MESSAGE_INITIALIZE = CHILD_MESSAGE_INITIALIZE;
const CHILD_MESSAGE_CALL = 1;
exports.CHILD_MESSAGE_CALL = CHILD_MESSAGE_CALL;
const CHILD_MESSAGE_END = 2;
exports.CHILD_MESSAGE_END = CHILD_MESSAGE_END;
const PARENT_MESSAGE_OK = 0;
exports.PARENT_MESSAGE_OK = PARENT_MESSAGE_OK;
const PARENT_MESSAGE_CLIENT_ERROR = 1;
exports.PARENT_MESSAGE_CLIENT_ERROR = PARENT_MESSAGE_CLIENT_ERROR;
const PARENT_MESSAGE_SETUP_ERROR = 2;
exports.PARENT_MESSAGE_SETUP_ERROR = PARENT_MESSAGE_SETUP_ERROR;
const PARENT_MESSAGE_CUSTOM = 3;
exports.PARENT_MESSAGE_CUSTOM = PARENT_MESSAGE_CUSTOM;

51
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/ChildProcessWorker.d.ts generated vendored Normal file
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
import { ChildMessage, OnCustomMessage, OnEnd, OnStart, WorkerInterface, WorkerOptions } from '../types';
/**
* This class wraps the child process and provides a nice interface to
* communicate with. It takes care of:
*
* - Re-spawning the process if it dies.
* - Queues calls while the worker is busy.
* - Re-sends the requests if the worker blew up.
*
* The reason for queueing them here (since childProcess.send also has an
* internal queue) is because the worker could be doing asynchronous work, and
* this would lead to the child process to read its receiving buffer and start a
* second call. By queueing calls here, we don't send the next call to the
* children until we receive the result of the previous one.
*
* As soon as a request starts to be processed by a worker, its "processed"
* field is changed to "true", so that other workers which might encounter the
* same call skip it.
*/
export default class ChildProcessWorker implements WorkerInterface {
private _child;
private _options;
private _request;
private _retries;
private _onProcessEnd;
private _onCustomMessage;
private _fakeStream;
private _stdout;
private _stderr;
private _exitPromise;
private _resolveExitPromise;
constructor(options: WorkerOptions);
initialize(): void;
private _shutdown;
private _onMessage;
private _onExit;
send(request: ChildMessage, onProcessStart: OnStart, onProcessEnd: OnEnd, onCustomMessage: OnCustomMessage): void;
waitForExit(): Promise<void>;
forceExit(): void;
getWorkerId(): number;
getStdout(): NodeJS.ReadableStream | null;
getStderr(): NodeJS.ReadableStream | null;
private _getFakeStream;
}

338
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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
function _child_process() {
const data = require('child_process');
_child_process = function () {
return data;
};
return data;
}
function _stream() {
const data = require('stream');
_stream = function () {
return data;
};
return data;
}
function _mergeStream() {
const data = _interopRequireDefault(require('merge-stream'));
_mergeStream = function () {
return data;
};
return data;
}
function _supportsColor() {
const data = require('supports-color');
_supportsColor = function () {
return data;
};
return data;
}
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
const SIGNAL_BASE_EXIT_CODE = 128;
const SIGKILL_EXIT_CODE = SIGNAL_BASE_EXIT_CODE + 9;
const SIGTERM_EXIT_CODE = SIGNAL_BASE_EXIT_CODE + 15; // How long to wait after SIGTERM before sending SIGKILL
const SIGKILL_DELAY = 500;
/**
* This class wraps the child process and provides a nice interface to
* communicate with. It takes care of:
*
* - Re-spawning the process if it dies.
* - Queues calls while the worker is busy.
* - Re-sends the requests if the worker blew up.
*
* The reason for queueing them here (since childProcess.send also has an
* internal queue) is because the worker could be doing asynchronous work, and
* this would lead to the child process to read its receiving buffer and start a
* second call. By queueing calls here, we don't send the next call to the
* children until we receive the result of the previous one.
*
* As soon as a request starts to be processed by a worker, its "processed"
* field is changed to "true", so that other workers which might encounter the
* same call skip it.
*/
class ChildProcessWorker {
constructor(options) {
_defineProperty(this, '_child', void 0);
_defineProperty(this, '_options', void 0);
_defineProperty(this, '_request', void 0);
_defineProperty(this, '_retries', void 0);
_defineProperty(this, '_onProcessEnd', void 0);
_defineProperty(this, '_onCustomMessage', void 0);
_defineProperty(this, '_fakeStream', void 0);
_defineProperty(this, '_stdout', void 0);
_defineProperty(this, '_stderr', void 0);
_defineProperty(this, '_exitPromise', void 0);
_defineProperty(this, '_resolveExitPromise', void 0);
this._options = options;
this._request = null;
this._fakeStream = null;
this._stdout = null;
this._stderr = null;
this._exitPromise = new Promise(resolve => {
this._resolveExitPromise = resolve;
});
this.initialize();
}
initialize() {
const forceColor = _supportsColor().stdout
? {
FORCE_COLOR: '1'
}
: {};
const child = (0, _child_process().fork)(
require.resolve('./processChild'),
[],
{
cwd: process.cwd(),
env: {
...process.env,
JEST_WORKER_ID: String(this._options.workerId + 1),
// 0-indexed workerId, 1-indexed JEST_WORKER_ID
...forceColor
},
// Suppress --debug / --inspect flags while preserving others (like --harmony).
execArgv: process.execArgv.filter(v => !/^--(debug|inspect)/.test(v)),
silent: true,
...this._options.forkOptions
}
);
if (child.stdout) {
if (!this._stdout) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stdout = (0, _mergeStream().default)(this._getFakeStream());
}
this._stdout.add(child.stdout);
}
if (child.stderr) {
if (!this._stderr) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stderr = (0, _mergeStream().default)(this._getFakeStream());
}
this._stderr.add(child.stderr);
}
child.on('message', this._onMessage.bind(this));
child.on('exit', this._onExit.bind(this));
child.send([
_types().CHILD_MESSAGE_INITIALIZE,
false,
this._options.workerPath,
this._options.setupArgs
]);
this._child = child;
this._retries++; // If we exceeded the amount of retries, we will emulate an error reply
// coming from the child. This avoids code duplication related with cleaning
// the queue, and scheduling the next call.
if (this._retries > this._options.maxRetries) {
const error = new Error('Call retries were exceeded');
this._onMessage([
_types().PARENT_MESSAGE_CLIENT_ERROR,
error.name,
error.message,
error.stack,
{
type: 'WorkerError'
}
]);
}
}
_shutdown() {
// End the temporary streams so the merged streams end too
if (this._fakeStream) {
this._fakeStream.end();
this._fakeStream = null;
}
this._resolveExitPromise();
}
_onMessage(response) {
// TODO: Add appropriate type check
let error;
switch (response[0]) {
case _types().PARENT_MESSAGE_OK:
this._onProcessEnd(null, response[1]);
break;
case _types().PARENT_MESSAGE_CLIENT_ERROR:
error = response[4];
if (error != null && typeof error === 'object') {
const extra = error; // @ts-expect-error: no index
const NativeCtor = global[response[1]];
const Ctor = typeof NativeCtor === 'function' ? NativeCtor : Error;
error = new Ctor(response[2]);
error.type = response[1];
error.stack = response[3];
for (const key in extra) {
error[key] = extra[key];
}
}
this._onProcessEnd(error, null);
break;
case _types().PARENT_MESSAGE_SETUP_ERROR:
error = new Error('Error when calling setup: ' + response[2]);
error.type = response[1];
error.stack = response[3];
this._onProcessEnd(error, null);
break;
case _types().PARENT_MESSAGE_CUSTOM:
this._onCustomMessage(response[1]);
break;
default:
throw new TypeError('Unexpected response from worker: ' + response[0]);
}
}
_onExit(exitCode) {
if (
exitCode !== 0 &&
exitCode !== SIGTERM_EXIT_CODE &&
exitCode !== SIGKILL_EXIT_CODE
) {
this.initialize();
if (this._request) {
this._child.send(this._request);
}
} else {
this._shutdown();
}
}
send(request, onProcessStart, onProcessEnd, onCustomMessage) {
onProcessStart(this);
this._onProcessEnd = (...args) => {
// Clean the request to avoid sending past requests to workers that fail
// while waiting for a new request (timers, unhandled rejections...)
this._request = null;
return onProcessEnd(...args);
};
this._onCustomMessage = (...arg) => onCustomMessage(...arg);
this._request = request;
this._retries = 0;
this._child.send(request);
}
waitForExit() {
return this._exitPromise;
}
forceExit() {
this._child.kill('SIGTERM');
const sigkillTimeout = setTimeout(
() => this._child.kill('SIGKILL'),
SIGKILL_DELAY
);
this._exitPromise.then(() => clearTimeout(sigkillTimeout));
}
getWorkerId() {
return this._options.workerId;
}
getStdout() {
return this._stdout;
}
getStderr() {
return this._stderr;
}
_getFakeStream() {
if (!this._fakeStream) {
this._fakeStream = new (_stream().PassThrough)();
}
return this._fakeStream;
}
}
exports.default = ChildProcessWorker;

34
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/NodeThreadsWorker.d.ts generated vendored Normal file
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
import { ChildMessage, OnCustomMessage, OnEnd, OnStart, WorkerInterface, WorkerOptions } from '../types';
export default class ExperimentalWorker implements WorkerInterface {
private _worker;
private _options;
private _request;
private _retries;
private _onProcessEnd;
private _onCustomMessage;
private _fakeStream;
private _stdout;
private _stderr;
private _exitPromise;
private _resolveExitPromise;
private _forceExited;
constructor(options: WorkerOptions);
initialize(): void;
private _shutdown;
private _onMessage;
private _onExit;
waitForExit(): Promise<void>;
forceExit(): void;
send(request: ChildMessage, onProcessStart: OnStart, onProcessEnd: OnEnd, onCustomMessage: OnCustomMessage): void;
getWorkerId(): number;
getStdout(): NodeJS.ReadableStream | null;
getStderr(): NodeJS.ReadableStream | null;
private _getFakeStream;
}

352
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/NodeThreadsWorker.js generated vendored Normal file
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@@ -0,0 +1,352 @@
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
function path() {
const data = _interopRequireWildcard(require('path'));
path = function () {
return data;
};
return data;
}
function _stream() {
const data = require('stream');
_stream = function () {
return data;
};
return data;
}
function _worker_threads() {
const data = require('worker_threads');
_worker_threads = function () {
return data;
};
return data;
}
function _mergeStream() {
const data = _interopRequireDefault(require('merge-stream'));
_mergeStream = function () {
return data;
};
return data;
}
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
function _getRequireWildcardCache() {
if (typeof WeakMap !== 'function') return null;
var cache = new WeakMap();
_getRequireWildcardCache = function () {
return cache;
};
return cache;
}
function _interopRequireWildcard(obj) {
if (obj && obj.__esModule) {
return obj;
}
if (obj === null || (typeof obj !== 'object' && typeof obj !== 'function')) {
return {default: obj};
}
var cache = _getRequireWildcardCache();
if (cache && cache.has(obj)) {
return cache.get(obj);
}
var newObj = {};
var hasPropertyDescriptor =
Object.defineProperty && Object.getOwnPropertyDescriptor;
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var desc = hasPropertyDescriptor
? Object.getOwnPropertyDescriptor(obj, key)
: null;
if (desc && (desc.get || desc.set)) {
Object.defineProperty(newObj, key, desc);
} else {
newObj[key] = obj[key];
}
}
}
newObj.default = obj;
if (cache) {
cache.set(obj, newObj);
}
return newObj;
}
function _defineProperty(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
class ExperimentalWorker {
constructor(options) {
_defineProperty(this, '_worker', void 0);
_defineProperty(this, '_options', void 0);
_defineProperty(this, '_request', void 0);
_defineProperty(this, '_retries', void 0);
_defineProperty(this, '_onProcessEnd', void 0);
_defineProperty(this, '_onCustomMessage', void 0);
_defineProperty(this, '_fakeStream', void 0);
_defineProperty(this, '_stdout', void 0);
_defineProperty(this, '_stderr', void 0);
_defineProperty(this, '_exitPromise', void 0);
_defineProperty(this, '_resolveExitPromise', void 0);
_defineProperty(this, '_forceExited', void 0);
this._options = options;
this._request = null;
this._fakeStream = null;
this._stdout = null;
this._stderr = null;
this._exitPromise = new Promise(resolve => {
this._resolveExitPromise = resolve;
});
this._forceExited = false;
this.initialize();
}
initialize() {
this._worker = new (_worker_threads().Worker)(
path().resolve(__dirname, './threadChild.js'),
{
eval: false,
// @ts-expect-error: added in newer versions
resourceLimits: this._options.resourceLimits,
stderr: true,
stdout: true,
workerData: {
cwd: process.cwd(),
env: {
...process.env,
JEST_WORKER_ID: String(this._options.workerId + 1) // 0-indexed workerId, 1-indexed JEST_WORKER_ID
},
// Suppress --debug / --inspect flags while preserving others (like --harmony).
execArgv: process.execArgv.filter(v => !/^--(debug|inspect)/.test(v)),
silent: true,
...this._options.forkOptions
}
}
);
if (this._worker.stdout) {
if (!this._stdout) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stdout = (0, _mergeStream().default)(this._getFakeStream());
}
this._stdout.add(this._worker.stdout);
}
if (this._worker.stderr) {
if (!this._stderr) {
// We need to add a permanent stream to the merged stream to prevent it
// from ending when the subprocess stream ends
this._stderr = (0, _mergeStream().default)(this._getFakeStream());
}
this._stderr.add(this._worker.stderr);
}
this._worker.on('message', this._onMessage.bind(this));
this._worker.on('exit', this._onExit.bind(this));
this._worker.postMessage([
_types().CHILD_MESSAGE_INITIALIZE,
false,
this._options.workerPath,
this._options.setupArgs
]);
this._retries++; // If we exceeded the amount of retries, we will emulate an error reply
// coming from the child. This avoids code duplication related with cleaning
// the queue, and scheduling the next call.
if (this._retries > this._options.maxRetries) {
const error = new Error('Call retries were exceeded');
this._onMessage([
_types().PARENT_MESSAGE_CLIENT_ERROR,
error.name,
error.message,
error.stack,
{
type: 'WorkerError'
}
]);
}
}
_shutdown() {
// End the permanent stream so the merged stream end too
if (this._fakeStream) {
this._fakeStream.end();
this._fakeStream = null;
}
this._resolveExitPromise();
}
_onMessage(response) {
let error;
switch (response[0]) {
case _types().PARENT_MESSAGE_OK:
this._onProcessEnd(null, response[1]);
break;
case _types().PARENT_MESSAGE_CLIENT_ERROR:
error = response[4];
if (error != null && typeof error === 'object') {
const extra = error; // @ts-expect-error: no index
const NativeCtor = global[response[1]];
const Ctor = typeof NativeCtor === 'function' ? NativeCtor : Error;
error = new Ctor(response[2]);
error.type = response[1];
error.stack = response[3];
for (const key in extra) {
// @ts-expect-error: no index
error[key] = extra[key];
}
}
this._onProcessEnd(error, null);
break;
case _types().PARENT_MESSAGE_SETUP_ERROR:
error = new Error('Error when calling setup: ' + response[2]); // @ts-expect-error: adding custom properties to errors.
error.type = response[1];
error.stack = response[3];
this._onProcessEnd(error, null);
break;
case _types().PARENT_MESSAGE_CUSTOM:
this._onCustomMessage(response[1]);
break;
default:
throw new TypeError('Unexpected response from worker: ' + response[0]);
}
}
_onExit(exitCode) {
if (exitCode !== 0 && !this._forceExited) {
this.initialize();
if (this._request) {
this._worker.postMessage(this._request);
}
} else {
this._shutdown();
}
}
waitForExit() {
return this._exitPromise;
}
forceExit() {
this._forceExited = true;
this._worker.terminate();
}
send(request, onProcessStart, onProcessEnd, onCustomMessage) {
onProcessStart(this);
this._onProcessEnd = (...args) => {
// Clean the request to avoid sending past requests to workers that fail
// while waiting for a new request (timers, unhandled rejections...)
this._request = null;
return onProcessEnd(...args);
};
this._onCustomMessage = (...arg) => onCustomMessage(...arg);
this._request = request;
this._retries = 0;
this._worker.postMessage(request);
}
getWorkerId() {
return this._options.workerId;
}
getStdout() {
return this._stdout;
}
getStderr() {
return this._stderr;
}
_getFakeStream() {
if (!this._fakeStream) {
this._fakeStream = new (_stream().PassThrough)();
}
return this._fakeStream;
}
}
exports.default = ExperimentalWorker;

9
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/messageParent.d.ts generated vendored Normal file
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
/// <reference types="node" />
declare const messageParent: (message: unknown, parentProcess?: NodeJS.Process) => void;
export default messageParent;

51
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/messageParent.js generated vendored Normal file
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@@ -0,0 +1,51 @@
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
exports.default = void 0;
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const isWorkerThread = () => {
try {
// `Require` here to support Node v10
const {isMainThread, parentPort} = require('worker_threads');
return !isMainThread && parentPort;
} catch {
return false;
}
};
const messageParent = (message, parentProcess = process) => {
try {
if (isWorkerThread()) {
// `Require` here to support Node v10
const {parentPort} = require('worker_threads');
parentPort.postMessage([_types().PARENT_MESSAGE_CUSTOM, message]);
} else if (typeof parentProcess.send === 'function') {
parentProcess.send([_types().PARENT_MESSAGE_CUSTOM, message]);
}
} catch {
throw new Error('"messageParent" can only be used inside a worker');
}
};
var _default = messageParent;
exports.default = _default;

7
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/processChild.d.ts generated vendored Normal file
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@@ -0,0 +1,7 @@
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
export {};

156
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/processChild.js generated vendored Normal file
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'use strict';
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
let file = null;
let setupArgs = [];
let initialized = false;
/**
* This file is a small bootstrapper for workers. It sets up the communication
* between the worker and the parent process, interpreting parent messages and
* sending results back.
*
* The file loaded will be lazily initialized the first time any of the workers
* is called. This is done for optimal performance: if the farm is initialized,
* but no call is made to it, child Node processes will be consuming the least
* possible amount of memory.
*
* If an invalid message is detected, the child will exit (by throwing) with a
* non-zero exit code.
*/
const messageListener = request => {
switch (request[0]) {
case _types().CHILD_MESSAGE_INITIALIZE:
const init = request;
file = init[2];
setupArgs = request[3];
break;
case _types().CHILD_MESSAGE_CALL:
const call = request;
execMethod(call[2], call[3]);
break;
case _types().CHILD_MESSAGE_END:
end();
break;
default:
throw new TypeError(
'Unexpected request from parent process: ' + request[0]
);
}
};
process.on('message', messageListener);
function reportSuccess(result) {
if (!process || !process.send) {
throw new Error('Child can only be used on a forked process');
}
process.send([_types().PARENT_MESSAGE_OK, result]);
}
function reportClientError(error) {
return reportError(error, _types().PARENT_MESSAGE_CLIENT_ERROR);
}
function reportInitializeError(error) {
return reportError(error, _types().PARENT_MESSAGE_SETUP_ERROR);
}
function reportError(error, type) {
if (!process || !process.send) {
throw new Error('Child can only be used on a forked process');
}
if (error == null) {
error = new Error('"null" or "undefined" thrown');
}
process.send([
type,
error.constructor && error.constructor.name,
error.message,
error.stack,
typeof error === 'object' ? {...error} : error
]);
}
function end() {
const main = require(file);
if (!main.teardown) {
exitProcess();
return;
}
execFunction(main.teardown, main, [], exitProcess, exitProcess);
}
function exitProcess() {
// Clean up open handles so the process ideally exits gracefully
process.removeListener('message', messageListener);
}
function execMethod(method, args) {
const main = require(file);
let fn;
if (method === 'default') {
fn = main.__esModule ? main['default'] : main;
} else {
fn = main[method];
}
function execHelper() {
execFunction(fn, main, args, reportSuccess, reportClientError);
}
if (initialized || !main.setup) {
execHelper();
return;
}
initialized = true;
execFunction(main.setup, main, setupArgs, execHelper, reportInitializeError);
}
const isPromise = obj =>
!!obj &&
(typeof obj === 'object' || typeof obj === 'function') &&
typeof obj.then === 'function';
function execFunction(fn, ctx, args, onResult, onError) {
let result;
try {
result = fn.apply(ctx, args);
} catch (err) {
onError(err);
return;
}
if (isPromise(result)) {
result.then(onResult, onError);
} else {
onResult(result);
}
}

7
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/threadChild.d.ts generated vendored Normal file
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@@ -0,0 +1,7 @@
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
export {};

169
node_modules/terser-webpack-plugin/node_modules/jest-worker/build/workers/threadChild.js generated vendored Normal file
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@@ -0,0 +1,169 @@
'use strict';
function _worker_threads() {
const data = require('worker_threads');
_worker_threads = function () {
return data;
};
return data;
}
function _types() {
const data = require('../types');
_types = function () {
return data;
};
return data;
}
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
let file = null;
let setupArgs = [];
let initialized = false;
/**
* This file is a small bootstrapper for workers. It sets up the communication
* between the worker and the parent process, interpreting parent messages and
* sending results back.
*
* The file loaded will be lazily initialized the first time any of the workers
* is called. This is done for optimal performance: if the farm is initialized,
* but no call is made to it, child Node processes will be consuming the least
* possible amount of memory.
*
* If an invalid message is detected, the child will exit (by throwing) with a
* non-zero exit code.
*/
const messageListener = request => {
switch (request[0]) {
case _types().CHILD_MESSAGE_INITIALIZE:
const init = request;
file = init[2];
setupArgs = request[3];
break;
case _types().CHILD_MESSAGE_CALL:
const call = request;
execMethod(call[2], call[3]);
break;
case _types().CHILD_MESSAGE_END:
end();
break;
default:
throw new TypeError(
'Unexpected request from parent process: ' + request[0]
);
}
};
_worker_threads().parentPort.on('message', messageListener);
function reportSuccess(result) {
if (_worker_threads().isMainThread) {
throw new Error('Child can only be used on a forked process');
}
_worker_threads().parentPort.postMessage([
_types().PARENT_MESSAGE_OK,
result
]);
}
function reportClientError(error) {
return reportError(error, _types().PARENT_MESSAGE_CLIENT_ERROR);
}
function reportInitializeError(error) {
return reportError(error, _types().PARENT_MESSAGE_SETUP_ERROR);
}
function reportError(error, type) {
if (_worker_threads().isMainThread) {
throw new Error('Child can only be used on a forked process');
}
if (error == null) {
error = new Error('"null" or "undefined" thrown');
}
_worker_threads().parentPort.postMessage([
type,
error.constructor && error.constructor.name,
error.message,
error.stack,
typeof error === 'object' ? {...error} : error
]);
}
function end() {
const main = require(file);
if (!main.teardown) {
exitProcess();
return;
}
execFunction(main.teardown, main, [], exitProcess, exitProcess);
}
function exitProcess() {
// Clean up open handles so the worker ideally exits gracefully
_worker_threads().parentPort.removeListener('message', messageListener);
}
function execMethod(method, args) {
const main = require(file);
let fn;
if (method === 'default') {
fn = main.__esModule ? main['default'] : main;
} else {
fn = main[method];
}
function execHelper() {
execFunction(fn, main, args, reportSuccess, reportClientError);
}
if (initialized || !main.setup) {
execHelper();
return;
}
initialized = true;
execFunction(main.setup, main, setupArgs, execHelper, reportInitializeError);
}
const isPromise = obj =>
!!obj &&
(typeof obj === 'object' || typeof obj === 'function') &&
typeof obj.then === 'function';
function execFunction(fn, ctx, args, onResult, onError) {
let result;
try {
result = fn.apply(ctx, args);
} catch (err) {
onError(err);
return;
}
if (isPromise(result)) {
result.then(onResult, onError);
} else {
onResult(result);
}
}

30
node_modules/terser-webpack-plugin/node_modules/jest-worker/package.json generated vendored Normal file
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{
"name": "jest-worker",
"version": "26.6.2",
"repository": {
"type": "git",
"url": "https://github.com/facebook/jest.git",
"directory": "packages/jest-worker"
},
"license": "MIT",
"main": "build/index.js",
"types": "build/index.d.ts",
"dependencies": {
"@types/node": "*",
"merge-stream": "^2.0.0",
"supports-color": "^7.0.0"
},
"devDependencies": {
"@types/merge-stream": "^1.1.2",
"@types/supports-color": "^7.2.0",
"get-stream": "^6.0.0",
"worker-farm": "^1.6.0"
},
"engines": {
"node": ">= 10.13.0"
},
"publishConfig": {
"access": "public"
},
"gitHead": "4c46930615602cbf983fb7e8e82884c282a624d5"
}

66
node_modules/terser-webpack-plugin/node_modules/make-dir/index.d.ts generated vendored Normal file
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/// <reference types="node"/>
import * as fs from 'fs';
declare namespace makeDir {
interface Options {
/**
Directory [permissions](https://x-team.com/blog/file-system-permissions-umask-node-js/).
@default 0o777
*/
readonly mode?: number;
/**
Use a custom `fs` implementation. For example [`graceful-fs`](https://github.com/isaacs/node-graceful-fs).
Using a custom `fs` implementation will block the use of the native `recursive` option if `fs.mkdir` or `fs.mkdirSync` is not the native function.
@default require('fs')
*/
readonly fs?: typeof fs;
}
}
declare const makeDir: {
/**
Make a directory and its parents if needed - Think `mkdir -p`.
@param path - Directory to create.
@returns The path to the created directory.
@example
```
import makeDir = require('make-dir');
(async () => {
const path = await makeDir('unicorn/rainbow/cake');
console.log(path);
//=> '/Users/sindresorhus/fun/unicorn/rainbow/cake'
// Multiple directories:
const paths = await Promise.all([
makeDir('unicorn/rainbow'),
makeDir('foo/bar')
]);
console.log(paths);
// [
// '/Users/sindresorhus/fun/unicorn/rainbow',
// '/Users/sindresorhus/fun/foo/bar'
// ]
})();
```
*/
(path: string, options?: makeDir.Options): Promise<string>;
/**
Synchronously make a directory and its parents if needed - Think `mkdir -p`.
@param path - Directory to create.
@returns The path to the created directory.
*/
sync(path: string, options?: makeDir.Options): string;
};
export = makeDir;

156
node_modules/terser-webpack-plugin/node_modules/make-dir/index.js generated vendored Normal file
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@@ -0,0 +1,156 @@
'use strict';
const fs = require('fs');
const path = require('path');
const {promisify} = require('util');
const semver = require('semver');
const useNativeRecursiveOption = semver.satisfies(process.version, '>=10.12.0');
// https://github.com/nodejs/node/issues/8987
// https://github.com/libuv/libuv/pull/1088
const checkPath = pth => {
if (process.platform === 'win32') {
const pathHasInvalidWinCharacters = /[<>:"|?*]/.test(pth.replace(path.parse(pth).root, ''));
if (pathHasInvalidWinCharacters) {
const error = new Error(`Path contains invalid characters: ${pth}`);
error.code = 'EINVAL';
throw error;
}
}
};
const processOptions = options => {
// https://github.com/sindresorhus/make-dir/issues/18
const defaults = {
mode: 0o777,
fs
};
return {
...defaults,
...options
};
};
const permissionError = pth => {
// This replicates the exception of `fs.mkdir` with native the
// `recusive` option when run on an invalid drive under Windows.
const error = new Error(`operation not permitted, mkdir '${pth}'`);
error.code = 'EPERM';
error.errno = -4048;
error.path = pth;
error.syscall = 'mkdir';
return error;
};
const makeDir = async (input, options) => {
checkPath(input);
options = processOptions(options);
const mkdir = promisify(options.fs.mkdir);
const stat = promisify(options.fs.stat);
if (useNativeRecursiveOption && options.fs.mkdir === fs.mkdir) {
const pth = path.resolve(input);
await mkdir(pth, {
mode: options.mode,
recursive: true
});
return pth;
}
const make = async pth => {
try {
await mkdir(pth, options.mode);
return pth;
} catch (error) {
if (error.code === 'EPERM') {
throw error;
}
if (error.code === 'ENOENT') {
if (path.dirname(pth) === pth) {
throw permissionError(pth);
}
if (error.message.includes('null bytes')) {
throw error;
}
await make(path.dirname(pth));
return make(pth);
}
try {
const stats = await stat(pth);
if (!stats.isDirectory()) {
throw new Error('The path is not a directory');
}
} catch (_) {
throw error;
}
return pth;
}
};
return make(path.resolve(input));
};
module.exports = makeDir;
module.exports.sync = (input, options) => {
checkPath(input);
options = processOptions(options);
if (useNativeRecursiveOption && options.fs.mkdirSync === fs.mkdirSync) {
const pth = path.resolve(input);
fs.mkdirSync(pth, {
mode: options.mode,
recursive: true
});
return pth;
}
const make = pth => {
try {
options.fs.mkdirSync(pth, options.mode);
} catch (error) {
if (error.code === 'EPERM') {
throw error;
}
if (error.code === 'ENOENT') {
if (path.dirname(pth) === pth) {
throw permissionError(pth);
}
if (error.message.includes('null bytes')) {
throw error;
}
make(path.dirname(pth));
return make(pth);
}
try {
if (!options.fs.statSync(pth).isDirectory()) {
throw new Error('The path is not a directory');
}
} catch (_) {
throw error;
}
}
return pth;
};
return make(path.resolve(input));
};

9
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@@ -0,0 +1,9 @@
MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

59
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{
"name": "make-dir",
"version": "3.1.0",
"description": "Make a directory and its parents if needed - Think `mkdir -p`",
"license": "MIT",
"repository": "sindresorhus/make-dir",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=8"
},
"scripts": {
"test": "xo && nyc ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"mkdir",
"mkdirp",
"make",
"directories",
"dir",
"dirs",
"folders",
"directory",
"folder",
"path",
"parent",
"parents",
"intermediate",
"recursively",
"recursive",
"create",
"fs",
"filesystem",
"file-system"
],
"dependencies": {
"semver": "^6.0.0"
},
"devDependencies": {
"@types/graceful-fs": "^4.1.3",
"@types/node": "^13.7.1",
"ava": "^1.4.0",
"codecov": "^3.2.0",
"graceful-fs": "^4.1.15",
"nyc": "^15.0.0",
"path-type": "^4.0.0",
"tempy": "^0.2.1",
"tsd": "^0.11.0",
"xo": "^0.25.4"
}
}

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# make-dir [![Build Status](https://travis-ci.org/sindresorhus/make-dir.svg?branch=master)](https://travis-ci.org/sindresorhus/make-dir) [![codecov](https://codecov.io/gh/sindresorhus/make-dir/branch/master/graph/badge.svg)](https://codecov.io/gh/sindresorhus/make-dir)
> Make a directory and its parents if needed - Think `mkdir -p`
## Advantages over [`mkdirp`](https://github.com/substack/node-mkdirp)
- Promise API *(Async/await ready!)*
- Fixes many `mkdirp` issues: [#96](https://github.com/substack/node-mkdirp/pull/96) [#70](https://github.com/substack/node-mkdirp/issues/70) [#66](https://github.com/substack/node-mkdirp/issues/66)
- 100% test coverage
- CI-tested on macOS, Linux, and Windows
- Actively maintained
- Doesn't bundle a CLI
- Uses the native `fs.mkdir/mkdirSync` [`recursive` option](https://nodejs.org/dist/latest/docs/api/fs.html#fs_fs_mkdir_path_options_callback) in Node.js >=10.12.0 unless [overridden](#fs)
## Install
```
$ npm install make-dir
```
## Usage
```
$ pwd
/Users/sindresorhus/fun
$ tree
.
```
```js
const makeDir = require('make-dir');
(async () => {
const path = await makeDir('unicorn/rainbow/cake');
console.log(path);
//=> '/Users/sindresorhus/fun/unicorn/rainbow/cake'
})();
```
```
$ tree
.
└── unicorn
└── rainbow
└── cake
```
Multiple directories:
```js
const makeDir = require('make-dir');
(async () => {
const paths = await Promise.all([
makeDir('unicorn/rainbow'),
makeDir('foo/bar')
]);
console.log(paths);
/*
[
'/Users/sindresorhus/fun/unicorn/rainbow',
'/Users/sindresorhus/fun/foo/bar'
]
*/
})();
```
## API
### makeDir(path, options?)
Returns a `Promise` for the path to the created directory.
### makeDir.sync(path, options?)
Returns the path to the created directory.
#### path
Type: `string`
Directory to create.
#### options
Type: `object`
##### mode
Type: `integer`\
Default: `0o777`
Directory [permissions](https://x-team.com/blog/file-system-permissions-umask-node-js/).
##### fs
Type: `object`\
Default: `require('fs')`
Use a custom `fs` implementation. For example [`graceful-fs`](https://github.com/isaacs/node-graceful-fs).
Using a custom `fs` implementation will block the use of the native `recursive` option if `fs.mkdir` or `fs.mkdirSync` is not the native function.
## Related
- [make-dir-cli](https://github.com/sindresorhus/make-dir-cli) - CLI for this module
- [del](https://github.com/sindresorhus/del) - Delete files and directories
- [globby](https://github.com/sindresorhus/globby) - User-friendly glob matching
- [cpy](https://github.com/sindresorhus/cpy) - Copy files
- [cpy-cli](https://github.com/sindresorhus/cpy-cli) - Copy files on the command-line
- [move-file](https://github.com/sindresorhus/move-file) - Move a file
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-make-dir?utm_source=npm-make-dir&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>

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declare namespace pLimit {
interface Limit {
/**
The number of promises that are currently running.
*/
readonly activeCount: number;
/**
The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
*/
readonly pendingCount: number;
/**
Discard pending promises that are waiting to run.
This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
Note: This does not cancel promises that are already running.
*/
clearQueue: () => void;
/**
@param fn - Promise-returning/async function.
@param arguments - Any arguments to pass through to `fn`. Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a lot of functions.
@returns The promise returned by calling `fn(...arguments)`.
*/
<Arguments extends unknown[], ReturnType>(
fn: (...arguments: Arguments) => PromiseLike<ReturnType> | ReturnType,
...arguments: Arguments
): Promise<ReturnType>;
}
}
/**
Run multiple promise-returning & async functions with limited concurrency.
@param concurrency - Concurrency limit. Minimum: `1`.
@returns A `limit` function.
*/
declare function pLimit(concurrency: number): pLimit.Limit;
export = pLimit;

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'use strict';
const Queue = require('yocto-queue');
const pLimit = concurrency => {
if (!((Number.isInteger(concurrency) || concurrency === Infinity) && concurrency > 0)) {
throw new TypeError('Expected `concurrency` to be a number from 1 and up');
}
const queue = new Queue();
let activeCount = 0;
const next = () => {
activeCount--;
if (queue.size > 0) {
queue.dequeue()();
}
};
const run = async (fn, resolve, ...args) => {
activeCount++;
const result = (async () => fn(...args))();
resolve(result);
try {
await result;
} catch {}
next();
};
const enqueue = (fn, resolve, ...args) => {
queue.enqueue(run.bind(null, fn, resolve, ...args));
(async () => {
// This function needs to wait until the next microtask before comparing
// `activeCount` to `concurrency`, because `activeCount` is updated asynchronously
// when the run function is dequeued and called. The comparison in the if-statement
// needs to happen asynchronously as well to get an up-to-date value for `activeCount`.
await Promise.resolve();
if (activeCount < concurrency && queue.size > 0) {
queue.dequeue()();
}
})();
};
const generator = (fn, ...args) => new Promise(resolve => {
enqueue(fn, resolve, ...args);
});
Object.defineProperties(generator, {
activeCount: {
get: () => activeCount
},
pendingCount: {
get: () => queue.size
},
clearQueue: {
value: () => {
queue.clear();
}
}
});
return generator;
};
module.exports = pLimit;

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

52
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{
"name": "p-limit",
"version": "3.1.0",
"description": "Run multiple promise-returning & async functions with limited concurrency",
"license": "MIT",
"repository": "sindresorhus/p-limit",
"funding": "https://github.com/sponsors/sindresorhus",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "https://sindresorhus.com"
},
"engines": {
"node": ">=10"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"promise",
"limit",
"limited",
"concurrency",
"throttle",
"throat",
"rate",
"batch",
"ratelimit",
"task",
"queue",
"async",
"await",
"promises",
"bluebird"
],
"dependencies": {
"yocto-queue": "^0.1.0"
},
"devDependencies": {
"ava": "^2.4.0",
"delay": "^4.4.0",
"in-range": "^2.0.0",
"random-int": "^2.0.1",
"time-span": "^4.0.0",
"tsd": "^0.13.1",
"xo": "^0.35.0"
}
}

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# p-limit
> Run multiple promise-returning & async functions with limited concurrency
## Install
```
$ npm install p-limit
```
## Usage
```js
const pLimit = require('p-limit');
const limit = pLimit(1);
const input = [
limit(() => fetchSomething('foo')),
limit(() => fetchSomething('bar')),
limit(() => doSomething())
];
(async () => {
// Only one promise is run at once
const result = await Promise.all(input);
console.log(result);
})();
```
## API
### pLimit(concurrency)
Returns a `limit` function.
#### concurrency
Type: `number`\
Minimum: `1`\
Default: `Infinity`
Concurrency limit.
### limit(fn, ...args)
Returns the promise returned by calling `fn(...args)`.
#### fn
Type: `Function`
Promise-returning/async function.
#### args
Any arguments to pass through to `fn`.
Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a *lot* of functions.
### limit.activeCount
The number of promises that are currently running.
### limit.pendingCount
The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
### limit.clearQueue()
Discard pending promises that are waiting to run.
This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
Note: This does not cancel promises that are already running.
## FAQ
### How is this different from the [`p-queue`](https://github.com/sindresorhus/p-queue) package?
This package is only about limiting the number of concurrent executions, while `p-queue` is a fully featured queue implementation with lots of different options, introspection, and ability to pause the queue.
## Related
- [p-queue](https://github.com/sindresorhus/p-queue) - Promise queue with concurrency control
- [p-throttle](https://github.com/sindresorhus/p-throttle) - Throttle promise-returning & async functions
- [p-debounce](https://github.com/sindresorhus/p-debounce) - Debounce promise-returning & async functions
- [p-all](https://github.com/sindresorhus/p-all) - Run promise-returning & async functions concurrently with optional limited concurrency
- [More…](https://github.com/sindresorhus/promise-fun)
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-p-limit?utm_source=npm-p-limit&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>

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declare const pkgDir: {
/**
Find the root directory of a Node.js project or npm package.
@param cwd - Directory to start from. Default: `process.cwd()`.
@returns The project root path or `undefined` if it couldn't be found.
@example
```
// /
// └── Users
// └── sindresorhus
// └── foo
// ├── package.json
// └── bar
// ├── baz
// └── example.js
// example.js
import pkgDir = require('pkg-dir');
(async () => {
const rootDir = await pkgDir(__dirname);
console.log(rootDir);
//=> '/Users/sindresorhus/foo'
})();
```
*/
(cwd?: string): Promise<string | undefined>;
/**
Synchronously find the root directory of a Node.js project or npm package.
@param cwd - Directory to start from. Default: `process.cwd()`.
@returns The project root path or `undefined` if it couldn't be found.
*/
sync(cwd?: string): string | undefined;
// TODO: Remove this for the next major release
default: typeof pkgDir;
};
export = pkgDir;

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'use strict';
const path = require('path');
const findUp = require('find-up');
const pkgDir = async cwd => {
const filePath = await findUp('package.json', {cwd});
return filePath && path.dirname(filePath);
};
module.exports = pkgDir;
// TODO: Remove this for the next major release
module.exports.default = pkgDir;
module.exports.sync = cwd => {
const filePath = findUp.sync('package.json', {cwd});
return filePath && path.dirname(filePath);
};

9
node_modules/terser-webpack-plugin/node_modules/pkg-dir/license generated vendored Normal file
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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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{
"name": "pkg-dir",
"version": "4.2.0",
"description": "Find the root directory of a Node.js project or npm package",
"license": "MIT",
"repository": "sindresorhus/pkg-dir",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=8"
},
"scripts": {
"test": "xo && ava && tsd"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"package",
"json",
"root",
"npm",
"entry",
"find",
"up",
"find-up",
"findup",
"look-up",
"look",
"file",
"search",
"match",
"resolve",
"parent",
"parents",
"folder",
"directory",
"dir",
"walk",
"walking",
"path"
],
"dependencies": {
"find-up": "^4.0.0"
},
"devDependencies": {
"ava": "^1.4.1",
"tempy": "^0.3.0",
"tsd": "^0.7.2",
"xo": "^0.24.0"
}
}

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# pkg-dir [![Build Status](https://travis-ci.org/sindresorhus/pkg-dir.svg?branch=master)](https://travis-ci.org/sindresorhus/pkg-dir)
> Find the root directory of a Node.js project or npm package
## Install
```
$ npm install pkg-dir
```
## Usage
```
/
└── Users
└── sindresorhus
└── foo
├── package.json
└── bar
├── baz
└── example.js
```
```js
// example.js
const pkgDir = require('pkg-dir');
(async () => {
const rootDir = await pkgDir(__dirname);
console.log(rootDir);
//=> '/Users/sindresorhus/foo'
})();
```
## API
### pkgDir([cwd])
Returns a `Promise` for either the project root path or `undefined` if it couldn't be found.
### pkgDir.sync([cwd])
Returns the project root path or `undefined` if it couldn't be found.
#### cwd
Type: `string`<br>
Default: `process.cwd()`
Directory to start from.
## Related
- [pkg-dir-cli](https://github.com/sindresorhus/pkg-dir-cli) - CLI for this module
- [pkg-up](https://github.com/sindresorhus/pkg-up) - Find the closest package.json file
- [find-up](https://github.com/sindresorhus/find-up) - Find a file by walking up parent directories
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

20
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Copyright JS Foundation and other contributors
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

290
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<div align="center">
<a href="http://json-schema.org">
<img width="160" height="160"
src="https://raw.githubusercontent.com/webpack-contrib/schema-utils/master/.github/assets/logo.png">
</a>
<a href="https://github.com/webpack/webpack">
<img width="200" height="200"
src="https://webpack.js.org/assets/icon-square-big.svg">
</a>
</div>
[![npm][npm]][npm-url]
[![node][node]][node-url]
[![deps][deps]][deps-url]
[![tests][tests]][tests-url]
[![coverage][cover]][cover-url]
[![chat][chat]][chat-url]
[![size][size]][size-url]
# schema-utils
Package for validate options in loaders and plugins.
## Getting Started
To begin, you'll need to install `schema-utils`:
```console
npm install schema-utils
```
## API
**schema.json**
```json
{
"type": "object",
"properties": {
"option": {
"type": "boolean"
}
},
"additionalProperties": false
}
```
```js
import schema from "./path/to/schema.json";
import { validate } from "schema-utils";
const options = { option: true };
const configuration = { name: "Loader Name/Plugin Name/Name" };
validate(schema, options, configuration);
```
### `schema`
Type: `String`
JSON schema.
Simple example of schema:
```json
{
"type": "object",
"properties": {
"name": {
"description": "This is description of option.",
"type": "string"
}
},
"additionalProperties": false
}
```
### `options`
Type: `Object`
Object with options.
```js
import schema from "./path/to/schema.json";
import { validate } from "schema-utils";
const options = { foo: "bar" };
validate(schema, { name: 123 }, { name: "MyPlugin" });
```
### `configuration`
Allow to configure validator.
There is an alternative method to configure the `name` and`baseDataPath` options via the `title` property in the schema.
For example:
```json
{
"title": "My Loader options",
"type": "object",
"properties": {
"name": {
"description": "This is description of option.",
"type": "string"
}
},
"additionalProperties": false
}
```
The last word used for the `baseDataPath` option, other words used for the `name` option.
Based on the example above the `name` option equals `My Loader`, the `baseDataPath` option equals `options`.
#### `name`
Type: `Object`
Default: `"Object"`
Allow to setup name in validation errors.
```js
import schema from "./path/to/schema.json";
import { validate } from "schema-utils";
const options = { foo: "bar" };
validate(schema, options, { name: "MyPlugin" });
```
```shell
Invalid configuration object. MyPlugin has been initialised using a configuration object that does not match the API schema.
- configuration.optionName should be a integer.
```
#### `baseDataPath`
Type: `String`
Default: `"configuration"`
Allow to setup base data path in validation errors.
```js
import schema from "./path/to/schema.json";
import { validate } from "schema-utils";
const options = { foo: "bar" };
validate(schema, options, { name: "MyPlugin", baseDataPath: "options" });
```
```shell
Invalid options object. MyPlugin has been initialised using an options object that does not match the API schema.
- options.optionName should be a integer.
```
#### `postFormatter`
Type: `Function`
Default: `undefined`
Allow to reformat errors.
```js
import schema from "./path/to/schema.json";
import { validate } from "schema-utils";
const options = { foo: "bar" };
validate(schema, options, {
name: "MyPlugin",
postFormatter: (formattedError, error) => {
if (error.keyword === "type") {
return `${formattedError}\nAdditional Information.`;
}
return formattedError;
},
});
```
```shell
Invalid options object. MyPlugin has been initialized using an options object that does not match the API schema.
- options.optionName should be a integer.
Additional Information.
```
## Examples
**schema.json**
```json
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"test": {
"anyOf": [
{ "type": "array" },
{ "type": "string" },
{ "instanceof": "RegExp" }
]
},
"transform": {
"instanceof": "Function"
},
"sourceMap": {
"type": "boolean"
}
},
"additionalProperties": false
}
```
### `Loader`
```js
import { getOptions } from "loader-utils";
import { validate } from "schema-utils";
import schema from "path/to/schema.json";
function loader(src, map) {
const options = getOptions(this);
validate(schema, options, {
name: "Loader Name",
baseDataPath: "options",
});
// Code...
}
export default loader;
```
### `Plugin`
```js
import { validate } from "schema-utils";
import schema from "path/to/schema.json";
class Plugin {
constructor(options) {
validate(schema, options, {
name: "Plugin Name",
baseDataPath: "options",
});
this.options = options;
}
apply(compiler) {
// Code...
}
}
export default Plugin;
```
## Contributing
Please take a moment to read our contributing guidelines if you haven't yet done so.
[CONTRIBUTING](./.github/CONTRIBUTING.md)
## License
[MIT](./LICENSE)
[npm]: https://img.shields.io/npm/v/schema-utils.svg
[npm-url]: https://npmjs.com/package/schema-utils
[node]: https://img.shields.io/node/v/schema-utils.svg
[node-url]: https://nodejs.org
[deps]: https://david-dm.org/webpack/schema-utils.svg
[deps-url]: https://david-dm.org/webpack/schema-utils
[tests]: https://github.com/webpack/schema-utils/workflows/schema-utils/badge.svg
[tests-url]: https://github.com/webpack/schema-utils/actions
[cover]: https://codecov.io/gh/webpack/schema-utils/branch/master/graph/badge.svg
[cover-url]: https://codecov.io/gh/webpack/schema-utils
[chat]: https://badges.gitter.im/webpack/webpack.svg
[chat-url]: https://gitter.im/webpack/webpack
[size]: https://packagephobia.com/badge?p=schema-utils
[size-url]: https://packagephobia.com/result?p=schema-utils

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export default ValidationError;
export type JSONSchema6 = import("json-schema").JSONSchema6;
export type JSONSchema7 = import("json-schema").JSONSchema7;
export type Schema = import("./validate").Schema;
export type ValidationErrorConfiguration =
import("./validate").ValidationErrorConfiguration;
export type PostFormatter = import("./validate").PostFormatter;
export type SchemaUtilErrorObject = import("./validate").SchemaUtilErrorObject;
declare class ValidationError extends Error {
/**
* @param {Array<SchemaUtilErrorObject>} errors
* @param {Schema} schema
* @param {ValidationErrorConfiguration} configuration
*/
constructor(
errors: Array<SchemaUtilErrorObject>,
schema: Schema,
configuration?: ValidationErrorConfiguration
);
/** @type {Array<SchemaUtilErrorObject>} */
errors: Array<SchemaUtilErrorObject>;
/** @type {Schema} */
schema: Schema;
/** @type {string} */
headerName: string;
/** @type {string} */
baseDataPath: string;
/** @type {PostFormatter | null} */
postFormatter: PostFormatter | null;
/**
* @param {string} path
* @returns {Schema}
*/
getSchemaPart(path: string): Schema;
/**
* @param {Schema} schema
* @param {boolean} logic
* @param {Array<Object>} prevSchemas
* @returns {string}
*/
formatSchema(
schema: Schema,
logic?: boolean,
prevSchemas?: Array<Object>
): string;
/**
* @param {Schema=} schemaPart
* @param {(boolean | Array<string>)=} additionalPath
* @param {boolean=} needDot
* @param {boolean=} logic
* @returns {string}
*/
getSchemaPartText(
schemaPart?: Schema | undefined,
additionalPath?: (boolean | Array<string>) | undefined,
needDot?: boolean | undefined,
logic?: boolean | undefined
): string;
/**
* @param {Schema=} schemaPart
* @returns {string}
*/
getSchemaPartDescription(schemaPart?: Schema | undefined): string;
/**
* @param {SchemaUtilErrorObject} error
* @returns {string}
*/
formatValidationError(error: SchemaUtilErrorObject): string;
/**
* @param {Array<SchemaUtilErrorObject>} errors
* @returns {string}
*/
formatValidationErrors(errors: Array<SchemaUtilErrorObject>): string;
}

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import { validate } from "./validate";
import { ValidationError } from "./validate";
export { validate, ValidationError };

10
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export default addAbsolutePathKeyword;
export type Ajv = import("ajv").Ajv;
export type ValidateFunction = import("ajv").ValidateFunction;
export type SchemaUtilErrorObject = import("../validate").SchemaUtilErrorObject;
/**
*
* @param {Ajv} ajv
* @returns {Ajv}
*/
declare function addAbsolutePathKeyword(ajv: Ajv): Ajv;

79
node_modules/terser-webpack-plugin/node_modules/schema-utils/declarations/util/Range.d.ts generated vendored Normal file
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export = Range;
/**
* @typedef {[number, boolean]} RangeValue
*/
/**
* @callback RangeValueCallback
* @param {RangeValue} rangeValue
* @returns {boolean}
*/
declare class Range {
/**
* @param {"left" | "right"} side
* @param {boolean} exclusive
* @returns {">" | ">=" | "<" | "<="}
*/
static getOperator(
side: "left" | "right",
exclusive: boolean
): ">" | ">=" | "<" | "<=";
/**
* @param {number} value
* @param {boolean} logic is not logic applied
* @param {boolean} exclusive is range exclusive
* @returns {string}
*/
static formatRight(value: number, logic: boolean, exclusive: boolean): string;
/**
* @param {number} value
* @param {boolean} logic is not logic applied
* @param {boolean} exclusive is range exclusive
* @returns {string}
*/
static formatLeft(value: number, logic: boolean, exclusive: boolean): string;
/**
* @param {number} start left side value
* @param {number} end right side value
* @param {boolean} startExclusive is range exclusive from left side
* @param {boolean} endExclusive is range exclusive from right side
* @param {boolean} logic is not logic applied
* @returns {string}
*/
static formatRange(
start: number,
end: number,
startExclusive: boolean,
endExclusive: boolean,
logic: boolean
): string;
/**
* @param {Array<RangeValue>} values
* @param {boolean} logic is not logic applied
* @return {RangeValue} computed value and it's exclusive flag
*/
static getRangeValue(values: Array<RangeValue>, logic: boolean): RangeValue;
/** @type {Array<RangeValue>} */
_left: Array<RangeValue>;
/** @type {Array<RangeValue>} */
_right: Array<RangeValue>;
/**
* @param {number} value
* @param {boolean=} exclusive
*/
left(value: number, exclusive?: boolean | undefined): void;
/**
* @param {number} value
* @param {boolean=} exclusive
*/
right(value: number, exclusive?: boolean | undefined): void;
/**
* @param {boolean} logic is not logic applied
* @return {string} "smart" range string representation
*/
format(logic?: boolean): string;
}
declare namespace Range {
export { RangeValue, RangeValueCallback };
}
type RangeValue = [number, boolean];
type RangeValueCallback = (rangeValue: RangeValue) => boolean;

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export function stringHints(schema: Schema, logic: boolean): string[];
export function numberHints(schema: Schema, logic: boolean): string[];
export type Schema = import("../validate").Schema;

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export type JSONSchema4 = import("json-schema").JSONSchema4;
export type JSONSchema6 = import("json-schema").JSONSchema6;
export type JSONSchema7 = import("json-schema").JSONSchema7;
export type ErrorObject = import("ajv").ErrorObject;
export type Extend = {
formatMinimum?: number | undefined;
formatMaximum?: number | undefined;
formatExclusiveMinimum?: boolean | undefined;
formatExclusiveMaximum?: boolean | undefined;
link?: string | undefined;
};
export type Schema = (JSONSchema4 | JSONSchema6 | JSONSchema7) & Extend;
export type SchemaUtilErrorObject = ErrorObject & {
children?: Array<ErrorObject>;
};
export type PostFormatter = (
formattedError: string,
error: SchemaUtilErrorObject
) => string;
export type ValidationErrorConfiguration = {
name?: string | undefined;
baseDataPath?: string | undefined;
postFormatter?: PostFormatter | undefined;
};
/**
* @param {Schema} schema
* @param {Array<object> | object} options
* @param {ValidationErrorConfiguration=} configuration
* @returns {void}
*/
export function validate(
schema: Schema,
options: Array<object> | object,
configuration?: ValidationErrorConfiguration | undefined
): void;
import ValidationError from "./ValidationError";
export { ValidationError };

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node_modules/terser-webpack-plugin/node_modules/schema-utils/dist/index.js generated vendored Normal file
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"use strict";
const {
validate,
ValidationError
} = require("./validate");
module.exports = {
validate,
ValidationError
};

93
node_modules/terser-webpack-plugin/node_modules/schema-utils/dist/keywords/absolutePath.js generated vendored Normal file
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
/** @typedef {import("ajv").Ajv} Ajv */
/** @typedef {import("ajv").ValidateFunction} ValidateFunction */
/** @typedef {import("../validate").SchemaUtilErrorObject} SchemaUtilErrorObject */
/**
* @param {string} message
* @param {object} schema
* @param {string} data
* @returns {SchemaUtilErrorObject}
*/
function errorMessage(message, schema, data) {
return {
// @ts-ignore
// eslint-disable-next-line no-undefined
dataPath: undefined,
// @ts-ignore
// eslint-disable-next-line no-undefined
schemaPath: undefined,
keyword: "absolutePath",
params: {
absolutePath: data
},
message,
parentSchema: schema
};
}
/**
* @param {boolean} shouldBeAbsolute
* @param {object} schema
* @param {string} data
* @returns {SchemaUtilErrorObject}
*/
function getErrorFor(shouldBeAbsolute, schema, data) {
const message = shouldBeAbsolute ? `The provided value ${JSON.stringify(data)} is not an absolute path!` : `A relative path is expected. However, the provided value ${JSON.stringify(data)} is an absolute path!`;
return errorMessage(message, schema, data);
}
/**
*
* @param {Ajv} ajv
* @returns {Ajv}
*/
function addAbsolutePathKeyword(ajv) {
ajv.addKeyword("absolutePath", {
errors: true,
type: "string",
compile(schema, parentSchema) {
/** @type {ValidateFunction} */
const callback = data => {
let passes = true;
const isExclamationMarkPresent = data.includes("!");
if (isExclamationMarkPresent) {
callback.errors = [errorMessage(`The provided value ${JSON.stringify(data)} contains exclamation mark (!) which is not allowed because it's reserved for loader syntax.`, parentSchema, data)];
passes = false;
} // ?:[A-Za-z]:\\ - Windows absolute path
// \\\\ - Windows network absolute path
// \/ - Unix-like OS absolute path
const isCorrectAbsolutePath = schema === /^(?:[A-Za-z]:(\\|\/)|\\\\|\/)/.test(data);
if (!isCorrectAbsolutePath) {
callback.errors = [getErrorFor(schema, parentSchema, data)];
passes = false;
}
return passes;
};
callback.errors = [];
return callback;
}
});
return ajv;
}
var _default = addAbsolutePathKeyword;
exports.default = _default;

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node_modules/terser-webpack-plugin/node_modules/schema-utils/dist/util/Range.js generated vendored Normal file
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"use strict";
/**
* @typedef {[number, boolean]} RangeValue
*/
/**
* @callback RangeValueCallback
* @param {RangeValue} rangeValue
* @returns {boolean}
*/
class Range {
/**
* @param {"left" | "right"} side
* @param {boolean} exclusive
* @returns {">" | ">=" | "<" | "<="}
*/
static getOperator(side, exclusive) {
if (side === "left") {
return exclusive ? ">" : ">=";
}
return exclusive ? "<" : "<=";
}
/**
* @param {number} value
* @param {boolean} logic is not logic applied
* @param {boolean} exclusive is range exclusive
* @returns {string}
*/
static formatRight(value, logic, exclusive) {
if (logic === false) {
return Range.formatLeft(value, !logic, !exclusive);
}
return `should be ${Range.getOperator("right", exclusive)} ${value}`;
}
/**
* @param {number} value
* @param {boolean} logic is not logic applied
* @param {boolean} exclusive is range exclusive
* @returns {string}
*/
static formatLeft(value, logic, exclusive) {
if (logic === false) {
return Range.formatRight(value, !logic, !exclusive);
}
return `should be ${Range.getOperator("left", exclusive)} ${value}`;
}
/**
* @param {number} start left side value
* @param {number} end right side value
* @param {boolean} startExclusive is range exclusive from left side
* @param {boolean} endExclusive is range exclusive from right side
* @param {boolean} logic is not logic applied
* @returns {string}
*/
static formatRange(start, end, startExclusive, endExclusive, logic) {
let result = "should be";
result += ` ${Range.getOperator(logic ? "left" : "right", logic ? startExclusive : !startExclusive)} ${start} `;
result += logic ? "and" : "or";
result += ` ${Range.getOperator(logic ? "right" : "left", logic ? endExclusive : !endExclusive)} ${end}`;
return result;
}
/**
* @param {Array<RangeValue>} values
* @param {boolean} logic is not logic applied
* @return {RangeValue} computed value and it's exclusive flag
*/
static getRangeValue(values, logic) {
let minMax = logic ? Infinity : -Infinity;
let j = -1;
const predicate = logic ?
/** @type {RangeValueCallback} */
([value]) => value <= minMax :
/** @type {RangeValueCallback} */
([value]) => value >= minMax;
for (let i = 0; i < values.length; i++) {
if (predicate(values[i])) {
[minMax] = values[i];
j = i;
}
}
if (j > -1) {
return values[j];
}
return [Infinity, true];
}
constructor() {
/** @type {Array<RangeValue>} */
this._left = [];
/** @type {Array<RangeValue>} */
this._right = [];
}
/**
* @param {number} value
* @param {boolean=} exclusive
*/
left(value, exclusive = false) {
this._left.push([value, exclusive]);
}
/**
* @param {number} value
* @param {boolean=} exclusive
*/
right(value, exclusive = false) {
this._right.push([value, exclusive]);
}
/**
* @param {boolean} logic is not logic applied
* @return {string} "smart" range string representation
*/
format(logic = true) {
const [start, leftExclusive] = Range.getRangeValue(this._left, logic);
const [end, rightExclusive] = Range.getRangeValue(this._right, !logic);
if (!Number.isFinite(start) && !Number.isFinite(end)) {
return "";
}
const realStart = leftExclusive ? start + 1 : start;
const realEnd = rightExclusive ? end - 1 : end; // e.g. 5 < x < 7, 5 < x <= 6, 6 <= x <= 6
if (realStart === realEnd) {
return `should be ${logic ? "" : "!"}= ${realStart}`;
} // e.g. 4 < x < ∞
if (Number.isFinite(start) && !Number.isFinite(end)) {
return Range.formatLeft(start, logic, leftExclusive);
} // e.g. ∞ < x < 4
if (!Number.isFinite(start) && Number.isFinite(end)) {
return Range.formatRight(end, logic, rightExclusive);
}
return Range.formatRange(start, end, leftExclusive, rightExclusive, logic);
}
}
module.exports = Range;

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"use strict";
const Range = require("./Range");
/** @typedef {import("../validate").Schema} Schema */
/**
* @param {Schema} schema
* @param {boolean} logic
* @return {string[]}
*/
module.exports.stringHints = function stringHints(schema, logic) {
const hints = [];
let type = "string";
const currentSchema = { ...schema
};
if (!logic) {
const tmpLength = currentSchema.minLength;
const tmpFormat = currentSchema.formatMinimum;
const tmpExclusive = currentSchema.formatExclusiveMaximum;
currentSchema.minLength = currentSchema.maxLength;
currentSchema.maxLength = tmpLength;
currentSchema.formatMinimum = currentSchema.formatMaximum;
currentSchema.formatMaximum = tmpFormat;
currentSchema.formatExclusiveMaximum = !currentSchema.formatExclusiveMinimum;
currentSchema.formatExclusiveMinimum = !tmpExclusive;
}
if (typeof currentSchema.minLength === "number") {
if (currentSchema.minLength === 1) {
type = "non-empty string";
} else {
const length = Math.max(currentSchema.minLength - 1, 0);
hints.push(`should be longer than ${length} character${length > 1 ? "s" : ""}`);
}
}
if (typeof currentSchema.maxLength === "number") {
if (currentSchema.maxLength === 0) {
type = "empty string";
} else {
const length = currentSchema.maxLength + 1;
hints.push(`should be shorter than ${length} character${length > 1 ? "s" : ""}`);
}
}
if (currentSchema.pattern) {
hints.push(`should${logic ? "" : " not"} match pattern ${JSON.stringify(currentSchema.pattern)}`);
}
if (currentSchema.format) {
hints.push(`should${logic ? "" : " not"} match format ${JSON.stringify(currentSchema.format)}`);
}
if (currentSchema.formatMinimum) {
hints.push(`should be ${currentSchema.formatExclusiveMinimum ? ">" : ">="} ${JSON.stringify(currentSchema.formatMinimum)}`);
}
if (currentSchema.formatMaximum) {
hints.push(`should be ${currentSchema.formatExclusiveMaximum ? "<" : "<="} ${JSON.stringify(currentSchema.formatMaximum)}`);
}
return [type].concat(hints);
};
/**
* @param {Schema} schema
* @param {boolean} logic
* @return {string[]}
*/
module.exports.numberHints = function numberHints(schema, logic) {
const hints = [schema.type === "integer" ? "integer" : "number"];
const range = new Range();
if (typeof schema.minimum === "number") {
range.left(schema.minimum);
}
if (typeof schema.exclusiveMinimum === "number") {
range.left(schema.exclusiveMinimum, true);
}
if (typeof schema.maximum === "number") {
range.right(schema.maximum);
}
if (typeof schema.exclusiveMaximum === "number") {
range.right(schema.exclusiveMaximum, true);
}
const rangeFormat = range.format(logic);
if (rangeFormat) {
hints.push(rangeFormat);
}
if (typeof schema.multipleOf === "number") {
hints.push(`should${logic ? "" : " not"} be multiple of ${schema.multipleOf}`);
}
return hints;
};

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.validate = validate;
Object.defineProperty(exports, "ValidationError", {
enumerable: true,
get: function () {
return _ValidationError.default;
}
});
var _absolutePath = _interopRequireDefault(require("./keywords/absolutePath"));
var _ValidationError = _interopRequireDefault(require("./ValidationError"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
// Use CommonJS require for ajv libs so TypeScript consumers aren't locked into esModuleInterop (see #110).
const Ajv = require("ajv");
const ajvKeywords = require("ajv-keywords");
/** @typedef {import("json-schema").JSONSchema4} JSONSchema4 */
/** @typedef {import("json-schema").JSONSchema6} JSONSchema6 */
/** @typedef {import("json-schema").JSONSchema7} JSONSchema7 */
/** @typedef {import("ajv").ErrorObject} ErrorObject */
/**
* @typedef {Object} Extend
* @property {number=} formatMinimum
* @property {number=} formatMaximum
* @property {boolean=} formatExclusiveMinimum
* @property {boolean=} formatExclusiveMaximum
* @property {string=} link
*/
/** @typedef {(JSONSchema4 | JSONSchema6 | JSONSchema7) & Extend} Schema */
/** @typedef {ErrorObject & { children?: Array<ErrorObject>}} SchemaUtilErrorObject */
/**
* @callback PostFormatter
* @param {string} formattedError
* @param {SchemaUtilErrorObject} error
* @returns {string}
*/
/**
* @typedef {Object} ValidationErrorConfiguration
* @property {string=} name
* @property {string=} baseDataPath
* @property {PostFormatter=} postFormatter
*/
const ajv = new Ajv({
allErrors: true,
verbose: true,
$data: true
});
ajvKeywords(ajv, ["instanceof", "formatMinimum", "formatMaximum", "patternRequired"]); // Custom keywords
(0, _absolutePath.default)(ajv);
/**
* @param {Schema} schema
* @param {Array<object> | object} options
* @param {ValidationErrorConfiguration=} configuration
* @returns {void}
*/
function validate(schema, options, configuration) {
let errors = [];
if (Array.isArray(options)) {
errors = Array.from(options, nestedOptions => validateObject(schema, nestedOptions));
errors.forEach((list, idx) => {
const applyPrefix =
/**
* @param {SchemaUtilErrorObject} error
*/
error => {
// eslint-disable-next-line no-param-reassign
error.dataPath = `[${idx}]${error.dataPath}`;
if (error.children) {
error.children.forEach(applyPrefix);
}
};
list.forEach(applyPrefix);
});
errors = errors.reduce((arr, items) => {
arr.push(...items);
return arr;
}, []);
} else {
errors = validateObject(schema, options);
}
if (errors.length > 0) {
throw new _ValidationError.default(errors, schema, configuration);
}
}
/**
* @param {Schema} schema
* @param {Array<object> | object} options
* @returns {Array<SchemaUtilErrorObject>}
*/
function validateObject(schema, options) {
const compiledSchema = ajv.compile(schema);
const valid = compiledSchema(options);
if (valid) return [];
return compiledSchema.errors ? filterErrors(compiledSchema.errors) : [];
}
/**
* @param {Array<ErrorObject>} errors
* @returns {Array<SchemaUtilErrorObject>}
*/
function filterErrors(errors) {
/** @type {Array<SchemaUtilErrorObject>} */
let newErrors = [];
for (const error of
/** @type {Array<SchemaUtilErrorObject>} */
errors) {
const {
dataPath
} = error;
/** @type {Array<SchemaUtilErrorObject>} */
let children = [];
newErrors = newErrors.filter(oldError => {
if (oldError.dataPath.includes(dataPath)) {
if (oldError.children) {
children = children.concat(oldError.children.slice(0));
} // eslint-disable-next-line no-undefined, no-param-reassign
oldError.children = undefined;
children.push(oldError);
return false;
}
return true;
});
if (children.length) {
error.children = children;
}
newErrors.push(error);
}
return newErrors;
}

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{
"name": "schema-utils",
"version": "3.1.1",
"description": "webpack Validation Utils",
"license": "MIT",
"repository": "webpack/schema-utils",
"author": "webpack Contrib (https://github.com/webpack-contrib)",
"homepage": "https://github.com/webpack/schema-utils",
"bugs": "https://github.com/webpack/schema-utils/issues",
"funding": {
"type": "opencollective",
"url": "https://opencollective.com/webpack"
},
"main": "dist/index.js",
"types": "declarations/index.d.ts",
"engines": {
"node": ">= 10.13.0"
},
"scripts": {
"start": "npm run build -- -w",
"clean": "del-cli dist declarations",
"prebuild": "npm run clean",
"build:types": "tsc --declaration --emitDeclarationOnly --outDir declarations && prettier \"declarations/**/*.ts\" --write",
"build:code": "cross-env NODE_ENV=production babel src -d dist --copy-files",
"build": "npm-run-all -p \"build:**\"",
"commitlint": "commitlint --from=master",
"security": "npm audit --production",
"fmt:check": "prettier \"{**/*,*}.{js,json,md,yml,css,ts}\" --list-different",
"lint:js": "eslint --cache .",
"lint:types": "tsc --pretty --noEmit",
"lint": "npm-run-all lint:js lint:types fmt:check",
"fmt": "npm run fmt:check -- --write",
"fix:js": "npm run lint:js -- --fix",
"fix": "npm-run-all fix:js fmt",
"test:only": "cross-env NODE_ENV=test jest",
"test:watch": "npm run test:only -- --watch",
"test:coverage": "npm run test:only -- --collectCoverageFrom=\"src/**/*.js\" --coverage",
"pretest": "npm run lint",
"test": "npm run test:coverage",
"prepare": "npm run build && husky install",
"release": "standard-version"
},
"files": [
"dist",
"declarations"
],
"dependencies": {
"@types/json-schema": "^7.0.8",
"ajv": "^6.12.5",
"ajv-keywords": "^3.5.2"
},
"devDependencies": {
"@babel/cli": "^7.14.3",
"@babel/core": "^7.14.6",
"@babel/preset-env": "^7.14.7",
"@commitlint/cli": "^12.1.4",
"@commitlint/config-conventional": "^12.1.4",
"@webpack-contrib/eslint-config-webpack": "^3.0.0",
"babel-jest": "^27.0.6",
"cross-env": "^7.0.3",
"del": "^6.0.0",
"del-cli": "^3.0.1",
"eslint": "^7.31.0",
"eslint-config-prettier": "^8.3.0",
"eslint-plugin-import": "^2.23.4",
"husky": "^6.0.0",
"jest": "^27.0.6",
"lint-staged": "^11.0.1",
"npm-run-all": "^4.1.5",
"prettier": "^2.3.2",
"standard-version": "^9.3.1",
"typescript": "^4.3.5",
"webpack": "^5.45.1"
},
"keywords": [
"webpack"
]
}

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# changes log
## 6.2.0
* Coerce numbers to strings when passed to semver.coerce()
* Add `rtl` option to coerce from right to left
## 6.1.3
* Handle X-ranges properly in includePrerelease mode
## 6.1.2
* Do not throw when testing invalid version strings
## 6.1.1
* Add options support for semver.coerce()
* Handle undefined version passed to Range.test
## 6.1.0
* Add semver.compareBuild function
* Support `*` in semver.intersects
## 6.0
* Fix `intersects` logic.
This is technically a bug fix, but since it is also a change to behavior
that may require users updating their code, it is marked as a major
version increment.
## 5.7
* Add `minVersion` method
## 5.6
* Move boolean `loose` param to an options object, with
backwards-compatibility protection.
* Add ability to opt out of special prerelease version handling with
the `includePrerelease` option flag.
## 5.5
* Add version coercion capabilities
## 5.4
* Add intersection checking
## 5.3
* Add `minSatisfying` method
## 5.2
* Add `prerelease(v)` that returns prerelease components
## 5.1
* Add Backus-Naur for ranges
* Remove excessively cute inspection methods
## 5.0
* Remove AMD/Browserified build artifacts
* Fix ltr and gtr when using the `*` range
* Fix for range `*` with a prerelease identifier

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The ISC License
Copyright (c) Isaac Z. Schlueter and Contributors
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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semver(1) -- The semantic versioner for npm
===========================================
## Install
```bash
npm install semver
````
## Usage
As a node module:
```js
const semver = require('semver')
semver.valid('1.2.3') // '1.2.3'
semver.valid('a.b.c') // null
semver.clean(' =v1.2.3 ') // '1.2.3'
semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true
semver.gt('1.2.3', '9.8.7') // false
semver.lt('1.2.3', '9.8.7') // true
semver.minVersion('>=1.0.0') // '1.0.0'
semver.valid(semver.coerce('v2')) // '2.0.0'
semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7'
```
As a command-line utility:
```
$ semver -h
A JavaScript implementation of the https://semver.org/ specification
Copyright Isaac Z. Schlueter
Usage: semver [options] <version> [<version> [...]]
Prints valid versions sorted by SemVer precedence
Options:
-r --range <range>
Print versions that match the specified range.
-i --increment [<level>]
Increment a version by the specified level. Level can
be one of: major, minor, patch, premajor, preminor,
prepatch, or prerelease. Default level is 'patch'.
Only one version may be specified.
--preid <identifier>
Identifier to be used to prefix premajor, preminor,
prepatch or prerelease version increments.
-l --loose
Interpret versions and ranges loosely
-p --include-prerelease
Always include prerelease versions in range matching
-c --coerce
Coerce a string into SemVer if possible
(does not imply --loose)
--rtl
Coerce version strings right to left
--ltr
Coerce version strings left to right (default)
Program exits successfully if any valid version satisfies
all supplied ranges, and prints all satisfying versions.
If no satisfying versions are found, then exits failure.
Versions are printed in ascending order, so supplying
multiple versions to the utility will just sort them.
```
## Versions
A "version" is described by the `v2.0.0` specification found at
<https://semver.org/>.
A leading `"="` or `"v"` character is stripped off and ignored.
## Ranges
A `version range` is a set of `comparators` which specify versions
that satisfy the range.
A `comparator` is composed of an `operator` and a `version`. The set
of primitive `operators` is:
* `<` Less than
* `<=` Less than or equal to
* `>` Greater than
* `>=` Greater than or equal to
* `=` Equal. If no operator is specified, then equality is assumed,
so this operator is optional, but MAY be included.
For example, the comparator `>=1.2.7` would match the versions
`1.2.7`, `1.2.8`, `2.5.3`, and `1.3.9`, but not the versions `1.2.6`
or `1.1.0`.
Comparators can be joined by whitespace to form a `comparator set`,
which is satisfied by the **intersection** of all of the comparators
it includes.
A range is composed of one or more comparator sets, joined by `||`. A
version matches a range if and only if every comparator in at least
one of the `||`-separated comparator sets is satisfied by the version.
For example, the range `>=1.2.7 <1.3.0` would match the versions
`1.2.7`, `1.2.8`, and `1.2.99`, but not the versions `1.2.6`, `1.3.0`,
or `1.1.0`.
The range `1.2.7 || >=1.2.9 <2.0.0` would match the versions `1.2.7`,
`1.2.9`, and `1.4.6`, but not the versions `1.2.8` or `2.0.0`.
### Prerelease Tags
If a version has a prerelease tag (for example, `1.2.3-alpha.3`) then
it will only be allowed to satisfy comparator sets if at least one
comparator with the same `[major, minor, patch]` tuple also has a
prerelease tag.
For example, the range `>1.2.3-alpha.3` would be allowed to match the
version `1.2.3-alpha.7`, but it would *not* be satisfied by
`3.4.5-alpha.9`, even though `3.4.5-alpha.9` is technically "greater
than" `1.2.3-alpha.3` according to the SemVer sort rules. The version
range only accepts prerelease tags on the `1.2.3` version. The
version `3.4.5` *would* satisfy the range, because it does not have a
prerelease flag, and `3.4.5` is greater than `1.2.3-alpha.7`.
The purpose for this behavior is twofold. First, prerelease versions
frequently are updated very quickly, and contain many breaking changes
that are (by the author's design) not yet fit for public consumption.
Therefore, by default, they are excluded from range matching
semantics.
Second, a user who has opted into using a prerelease version has
clearly indicated the intent to use *that specific* set of
alpha/beta/rc versions. By including a prerelease tag in the range,
the user is indicating that they are aware of the risk. However, it
is still not appropriate to assume that they have opted into taking a
similar risk on the *next* set of prerelease versions.
Note that this behavior can be suppressed (treating all prerelease
versions as if they were normal versions, for the purpose of range
matching) by setting the `includePrerelease` flag on the options
object to any
[functions](https://github.com/npm/node-semver#functions) that do
range matching.
#### Prerelease Identifiers
The method `.inc` takes an additional `identifier` string argument that
will append the value of the string as a prerelease identifier:
```javascript
semver.inc('1.2.3', 'prerelease', 'beta')
// '1.2.4-beta.0'
```
command-line example:
```bash
$ semver 1.2.3 -i prerelease --preid beta
1.2.4-beta.0
```
Which then can be used to increment further:
```bash
$ semver 1.2.4-beta.0 -i prerelease
1.2.4-beta.1
```
### Advanced Range Syntax
Advanced range syntax desugars to primitive comparators in
deterministic ways.
Advanced ranges may be combined in the same way as primitive
comparators using white space or `||`.
#### Hyphen Ranges `X.Y.Z - A.B.C`
Specifies an inclusive set.
* `1.2.3 - 2.3.4` := `>=1.2.3 <=2.3.4`
If a partial version is provided as the first version in the inclusive
range, then the missing pieces are replaced with zeroes.
* `1.2 - 2.3.4` := `>=1.2.0 <=2.3.4`
If a partial version is provided as the second version in the
inclusive range, then all versions that start with the supplied parts
of the tuple are accepted, but nothing that would be greater than the
provided tuple parts.
* `1.2.3 - 2.3` := `>=1.2.3 <2.4.0`
* `1.2.3 - 2` := `>=1.2.3 <3.0.0`
#### X-Ranges `1.2.x` `1.X` `1.2.*` `*`
Any of `X`, `x`, or `*` may be used to "stand in" for one of the
numeric values in the `[major, minor, patch]` tuple.
* `*` := `>=0.0.0` (Any version satisfies)
* `1.x` := `>=1.0.0 <2.0.0` (Matching major version)
* `1.2.x` := `>=1.2.0 <1.3.0` (Matching major and minor versions)
A partial version range is treated as an X-Range, so the special
character is in fact optional.
* `""` (empty string) := `*` := `>=0.0.0`
* `1` := `1.x.x` := `>=1.0.0 <2.0.0`
* `1.2` := `1.2.x` := `>=1.2.0 <1.3.0`
#### Tilde Ranges `~1.2.3` `~1.2` `~1`
Allows patch-level changes if a minor version is specified on the
comparator. Allows minor-level changes if not.
* `~1.2.3` := `>=1.2.3 <1.(2+1).0` := `>=1.2.3 <1.3.0`
* `~1.2` := `>=1.2.0 <1.(2+1).0` := `>=1.2.0 <1.3.0` (Same as `1.2.x`)
* `~1` := `>=1.0.0 <(1+1).0.0` := `>=1.0.0 <2.0.0` (Same as `1.x`)
* `~0.2.3` := `>=0.2.3 <0.(2+1).0` := `>=0.2.3 <0.3.0`
* `~0.2` := `>=0.2.0 <0.(2+1).0` := `>=0.2.0 <0.3.0` (Same as `0.2.x`)
* `~0` := `>=0.0.0 <(0+1).0.0` := `>=0.0.0 <1.0.0` (Same as `0.x`)
* `~1.2.3-beta.2` := `>=1.2.3-beta.2 <1.3.0` Note that prereleases in
the `1.2.3` version will be allowed, if they are greater than or
equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but
`1.2.4-beta.2` would not, because it is a prerelease of a
different `[major, minor, patch]` tuple.
#### Caret Ranges `^1.2.3` `^0.2.5` `^0.0.4`
Allows changes that do not modify the left-most non-zero element in the
`[major, minor, patch]` tuple. In other words, this allows patch and
minor updates for versions `1.0.0` and above, patch updates for
versions `0.X >=0.1.0`, and *no* updates for versions `0.0.X`.
Many authors treat a `0.x` version as if the `x` were the major
"breaking-change" indicator.
Caret ranges are ideal when an author may make breaking changes
between `0.2.4` and `0.3.0` releases, which is a common practice.
However, it presumes that there will *not* be breaking changes between
`0.2.4` and `0.2.5`. It allows for changes that are presumed to be
additive (but non-breaking), according to commonly observed practices.
* `^1.2.3` := `>=1.2.3 <2.0.0`
* `^0.2.3` := `>=0.2.3 <0.3.0`
* `^0.0.3` := `>=0.0.3 <0.0.4`
* `^1.2.3-beta.2` := `>=1.2.3-beta.2 <2.0.0` Note that prereleases in
the `1.2.3` version will be allowed, if they are greater than or
equal to `beta.2`. So, `1.2.3-beta.4` would be allowed, but
`1.2.4-beta.2` would not, because it is a prerelease of a
different `[major, minor, patch]` tuple.
* `^0.0.3-beta` := `>=0.0.3-beta <0.0.4` Note that prereleases in the
`0.0.3` version *only* will be allowed, if they are greater than or
equal to `beta`. So, `0.0.3-pr.2` would be allowed.
When parsing caret ranges, a missing `patch` value desugars to the
number `0`, but will allow flexibility within that value, even if the
major and minor versions are both `0`.
* `^1.2.x` := `>=1.2.0 <2.0.0`
* `^0.0.x` := `>=0.0.0 <0.1.0`
* `^0.0` := `>=0.0.0 <0.1.0`
A missing `minor` and `patch` values will desugar to zero, but also
allow flexibility within those values, even if the major version is
zero.
* `^1.x` := `>=1.0.0 <2.0.0`
* `^0.x` := `>=0.0.0 <1.0.0`
### Range Grammar
Putting all this together, here is a Backus-Naur grammar for ranges,
for the benefit of parser authors:
```bnf
range-set ::= range ( logical-or range ) *
logical-or ::= ( ' ' ) * '||' ( ' ' ) *
range ::= hyphen | simple ( ' ' simple ) * | ''
hyphen ::= partial ' - ' partial
simple ::= primitive | partial | tilde | caret
primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
xr ::= 'x' | 'X' | '*' | nr
nr ::= '0' | ['1'-'9'] ( ['0'-'9'] ) *
tilde ::= '~' partial
caret ::= '^' partial
qualifier ::= ( '-' pre )? ( '+' build )?
pre ::= parts
build ::= parts
parts ::= part ( '.' part ) *
part ::= nr | [-0-9A-Za-z]+
```
## Functions
All methods and classes take a final `options` object argument. All
options in this object are `false` by default. The options supported
are:
- `loose` Be more forgiving about not-quite-valid semver strings.
(Any resulting output will always be 100% strict compliant, of
course.) For backwards compatibility reasons, if the `options`
argument is a boolean value instead of an object, it is interpreted
to be the `loose` param.
- `includePrerelease` Set to suppress the [default
behavior](https://github.com/npm/node-semver#prerelease-tags) of
excluding prerelease tagged versions from ranges unless they are
explicitly opted into.
Strict-mode Comparators and Ranges will be strict about the SemVer
strings that they parse.
* `valid(v)`: Return the parsed version, or null if it's not valid.
* `inc(v, release)`: Return the version incremented by the release
type (`major`, `premajor`, `minor`, `preminor`, `patch`,
`prepatch`, or `prerelease`), or null if it's not valid
* `premajor` in one call will bump the version up to the next major
version and down to a prerelease of that major version.
`preminor`, and `prepatch` work the same way.
* If called from a non-prerelease version, the `prerelease` will work the
same as `prepatch`. It increments the patch version, then makes a
prerelease. If the input version is already a prerelease it simply
increments it.
* `prerelease(v)`: Returns an array of prerelease components, or null
if none exist. Example: `prerelease('1.2.3-alpha.1') -> ['alpha', 1]`
* `major(v)`: Return the major version number.
* `minor(v)`: Return the minor version number.
* `patch(v)`: Return the patch version number.
* `intersects(r1, r2, loose)`: Return true if the two supplied ranges
or comparators intersect.
* `parse(v)`: Attempt to parse a string as a semantic version, returning either
a `SemVer` object or `null`.
### Comparison
* `gt(v1, v2)`: `v1 > v2`
* `gte(v1, v2)`: `v1 >= v2`
* `lt(v1, v2)`: `v1 < v2`
* `lte(v1, v2)`: `v1 <= v2`
* `eq(v1, v2)`: `v1 == v2` This is true if they're logically equivalent,
even if they're not the exact same string. You already know how to
compare strings.
* `neq(v1, v2)`: `v1 != v2` The opposite of `eq`.
* `cmp(v1, comparator, v2)`: Pass in a comparison string, and it'll call
the corresponding function above. `"==="` and `"!=="` do simple
string comparison, but are included for completeness. Throws if an
invalid comparison string is provided.
* `compare(v1, v2)`: Return `0` if `v1 == v2`, or `1` if `v1` is greater, or `-1` if
`v2` is greater. Sorts in ascending order if passed to `Array.sort()`.
* `rcompare(v1, v2)`: The reverse of compare. Sorts an array of versions
in descending order when passed to `Array.sort()`.
* `compareBuild(v1, v2)`: The same as `compare` but considers `build` when two versions
are equal. Sorts in ascending order if passed to `Array.sort()`.
`v2` is greater. Sorts in ascending order if passed to `Array.sort()`.
* `diff(v1, v2)`: Returns difference between two versions by the release type
(`major`, `premajor`, `minor`, `preminor`, `patch`, `prepatch`, or `prerelease`),
or null if the versions are the same.
### Comparators
* `intersects(comparator)`: Return true if the comparators intersect
### Ranges
* `validRange(range)`: Return the valid range or null if it's not valid
* `satisfies(version, range)`: Return true if the version satisfies the
range.
* `maxSatisfying(versions, range)`: Return the highest version in the list
that satisfies the range, or `null` if none of them do.
* `minSatisfying(versions, range)`: Return the lowest version in the list
that satisfies the range, or `null` if none of them do.
* `minVersion(range)`: Return the lowest version that can possibly match
the given range.
* `gtr(version, range)`: Return `true` if version is greater than all the
versions possible in the range.
* `ltr(version, range)`: Return `true` if version is less than all the
versions possible in the range.
* `outside(version, range, hilo)`: Return true if the version is outside
the bounds of the range in either the high or low direction. The
`hilo` argument must be either the string `'>'` or `'<'`. (This is
the function called by `gtr` and `ltr`.)
* `intersects(range)`: Return true if any of the ranges comparators intersect
Note that, since ranges may be non-contiguous, a version might not be
greater than a range, less than a range, *or* satisfy a range! For
example, the range `1.2 <1.2.9 || >2.0.0` would have a hole from `1.2.9`
until `2.0.0`, so the version `1.2.10` would not be greater than the
range (because `2.0.1` satisfies, which is higher), nor less than the
range (since `1.2.8` satisfies, which is lower), and it also does not
satisfy the range.
If you want to know if a version satisfies or does not satisfy a
range, use the `satisfies(version, range)` function.
### Coercion
* `coerce(version, options)`: Coerces a string to semver if possible
This aims to provide a very forgiving translation of a non-semver string to
semver. It looks for the first digit in a string, and consumes all
remaining characters which satisfy at least a partial semver (e.g., `1`,
`1.2`, `1.2.3`) up to the max permitted length (256 characters). Longer
versions are simply truncated (`4.6.3.9.2-alpha2` becomes `4.6.3`). All
surrounding text is simply ignored (`v3.4 replaces v3.3.1` becomes
`3.4.0`). Only text which lacks digits will fail coercion (`version one`
is not valid). The maximum length for any semver component considered for
coercion is 16 characters; longer components will be ignored
(`10000000000000000.4.7.4` becomes `4.7.4`). The maximum value for any
semver component is `Integer.MAX_SAFE_INTEGER || (2**53 - 1)`; higher value
components are invalid (`9999999999999999.4.7.4` is likely invalid).
If the `options.rtl` flag is set, then `coerce` will return the right-most
coercible tuple that does not share an ending index with a longer coercible
tuple. For example, `1.2.3.4` will return `2.3.4` in rtl mode, not
`4.0.0`. `1.2.3/4` will return `4.0.0`, because the `4` is not a part of
any other overlapping SemVer tuple.
### Clean
* `clean(version)`: Clean a string to be a valid semver if possible
This will return a cleaned and trimmed semver version. If the provided version is not valid a null will be returned. This does not work for ranges.
ex.
* `s.clean(' = v 2.1.5foo')`: `null`
* `s.clean(' = v 2.1.5foo', { loose: true })`: `'2.1.5-foo'`
* `s.clean(' = v 2.1.5-foo')`: `null`
* `s.clean(' = v 2.1.5-foo', { loose: true })`: `'2.1.5-foo'`
* `s.clean('=v2.1.5')`: `'2.1.5'`
* `s.clean(' =v2.1.5')`: `2.1.5`
* `s.clean(' 2.1.5 ')`: `'2.1.5'`
* `s.clean('~1.0.0')`: `null`

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#!/usr/bin/env node
// Standalone semver comparison program.
// Exits successfully and prints matching version(s) if
// any supplied version is valid and passes all tests.
var argv = process.argv.slice(2)
var versions = []
var range = []
var inc = null
var version = require('../package.json').version
var loose = false
var includePrerelease = false
var coerce = false
var rtl = false
var identifier
var semver = require('../semver')
var reverse = false
var options = {}
main()
function main () {
if (!argv.length) return help()
while (argv.length) {
var a = argv.shift()
var indexOfEqualSign = a.indexOf('=')
if (indexOfEqualSign !== -1) {
a = a.slice(0, indexOfEqualSign)
argv.unshift(a.slice(indexOfEqualSign + 1))
}
switch (a) {
case '-rv': case '-rev': case '--rev': case '--reverse':
reverse = true
break
case '-l': case '--loose':
loose = true
break
case '-p': case '--include-prerelease':
includePrerelease = true
break
case '-v': case '--version':
versions.push(argv.shift())
break
case '-i': case '--inc': case '--increment':
switch (argv[0]) {
case 'major': case 'minor': case 'patch': case 'prerelease':
case 'premajor': case 'preminor': case 'prepatch':
inc = argv.shift()
break
default:
inc = 'patch'
break
}
break
case '--preid':
identifier = argv.shift()
break
case '-r': case '--range':
range.push(argv.shift())
break
case '-c': case '--coerce':
coerce = true
break
case '--rtl':
rtl = true
break
case '--ltr':
rtl = false
break
case '-h': case '--help': case '-?':
return help()
default:
versions.push(a)
break
}
}
var options = { loose: loose, includePrerelease: includePrerelease, rtl: rtl }
versions = versions.map(function (v) {
return coerce ? (semver.coerce(v, options) || { version: v }).version : v
}).filter(function (v) {
return semver.valid(v)
})
if (!versions.length) return fail()
if (inc && (versions.length !== 1 || range.length)) { return failInc() }
for (var i = 0, l = range.length; i < l; i++) {
versions = versions.filter(function (v) {
return semver.satisfies(v, range[i], options)
})
if (!versions.length) return fail()
}
return success(versions)
}
function failInc () {
console.error('--inc can only be used on a single version with no range')
fail()
}
function fail () { process.exit(1) }
function success () {
var compare = reverse ? 'rcompare' : 'compare'
versions.sort(function (a, b) {
return semver[compare](a, b, options)
}).map(function (v) {
return semver.clean(v, options)
}).map(function (v) {
return inc ? semver.inc(v, inc, options, identifier) : v
}).forEach(function (v, i, _) { console.log(v) })
}
function help () {
console.log(['SemVer ' + version,
'',
'A JavaScript implementation of the https://semver.org/ specification',
'Copyright Isaac Z. Schlueter',
'',
'Usage: semver [options] <version> [<version> [...]]',
'Prints valid versions sorted by SemVer precedence',
'',
'Options:',
'-r --range <range>',
' Print versions that match the specified range.',
'',
'-i --increment [<level>]',
' Increment a version by the specified level. Level can',
' be one of: major, minor, patch, premajor, preminor,',
" prepatch, or prerelease. Default level is 'patch'.",
' Only one version may be specified.',
'',
'--preid <identifier>',
' Identifier to be used to prefix premajor, preminor,',
' prepatch or prerelease version increments.',
'',
'-l --loose',
' Interpret versions and ranges loosely',
'',
'-p --include-prerelease',
' Always include prerelease versions in range matching',
'',
'-c --coerce',
' Coerce a string into SemVer if possible',
' (does not imply --loose)',
'',
'--rtl',
' Coerce version strings right to left',
'',
'--ltr',
' Coerce version strings left to right (default)',
'',
'Program exits successfully if any valid version satisfies',
'all supplied ranges, and prints all satisfying versions.',
'',
'If no satisfying versions are found, then exits failure.',
'',
'Versions are printed in ascending order, so supplying',
'multiple versions to the utility will just sort them.'
].join('\n'))
}

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{
"name": "semver",
"version": "6.3.0",
"description": "The semantic version parser used by npm.",
"main": "semver.js",
"scripts": {
"test": "tap",
"preversion": "npm test",
"postversion": "npm publish",
"postpublish": "git push origin --follow-tags"
},
"devDependencies": {
"tap": "^14.3.1"
},
"license": "ISC",
"repository": "https://github.com/npm/node-semver",
"bin": {
"semver": "./bin/semver.js"
},
"files": [
"bin",
"range.bnf",
"semver.js"
],
"tap": {
"check-coverage": true
}
}

16
node_modules/terser-webpack-plugin/node_modules/semver/range.bnf generated vendored Normal file
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@@ -0,0 +1,16 @@
range-set ::= range ( logical-or range ) *
logical-or ::= ( ' ' ) * '||' ( ' ' ) *
range ::= hyphen | simple ( ' ' simple ) * | ''
hyphen ::= partial ' - ' partial
simple ::= primitive | partial | tilde | caret
primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
xr ::= 'x' | 'X' | '*' | nr
nr ::= '0' | [1-9] ( [0-9] ) *
tilde ::= '~' partial
caret ::= '^' partial
qualifier ::= ( '-' pre )? ( '+' build )?
pre ::= parts
build ::= parts
parts ::= part ( '.' part ) *
part ::= nr | [-0-9A-Za-z]+

1596
node_modules/terser-webpack-plugin/node_modules/semver/semver.js generated vendored Normal file
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File diff suppressed because it is too large Load Diff

301
node_modules/terser-webpack-plugin/node_modules/source-map/CHANGELOG.md generated vendored Normal file
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# Change Log
## 0.5.6
* Fix for regression when people were using numbers as names in source maps. See
#236.
## 0.5.5
* Fix "regression" of unsupported, implementation behavior that half the world
happens to have come to depend on. See #235.
* Fix regression involving function hoisting in SpiderMonkey. See #233.
## 0.5.4
* Large performance improvements to source-map serialization. See #228 and #229.
## 0.5.3
* Do not include unnecessary distribution files. See
commit ef7006f8d1647e0a83fdc60f04f5a7ca54886f86.
## 0.5.2
* Include browser distributions of the library in package.json's `files`. See
issue #212.
## 0.5.1
* Fix latent bugs in IndexedSourceMapConsumer.prototype._parseMappings. See
ff05274becc9e6e1295ed60f3ea090d31d843379.
## 0.5.0
* Node 0.8 is no longer supported.
* Use webpack instead of dryice for bundling.
* Big speedups serializing source maps. See pull request #203.
* Fix a bug with `SourceMapConsumer.prototype.sourceContentFor` and sources that
explicitly start with the source root. See issue #199.
## 0.4.4
* Fix an issue where using a `SourceMapGenerator` after having created a
`SourceMapConsumer` from it via `SourceMapConsumer.fromSourceMap` failed. See
issue #191.
* Fix an issue with where `SourceMapGenerator` would mistakenly consider
different mappings as duplicates of each other and avoid generating them. See
issue #192.
## 0.4.3
* A very large number of performance improvements, particularly when parsing
source maps. Collectively about 75% of time shaved off of the source map
parsing benchmark!
* Fix a bug in `SourceMapConsumer.prototype.allGeneratedPositionsFor` and fuzzy
searching in the presence of a column option. See issue #177.
* Fix a bug with joining a source and its source root when the source is above
the root. See issue #182.
* Add the `SourceMapConsumer.prototype.hasContentsOfAllSources` method to
determine when all sources' contents are inlined into the source map. See
issue #190.
## 0.4.2
* Add an `.npmignore` file so that the benchmarks aren't pulled down by
dependent projects. Issue #169.
* Add an optional `column` argument to
`SourceMapConsumer.prototype.allGeneratedPositionsFor` and better handle lines
with no mappings. Issues #172 and #173.
## 0.4.1
* Fix accidentally defining a global variable. #170.
## 0.4.0
* The default direction for fuzzy searching was changed back to its original
direction. See #164.
* There is now a `bias` option you can supply to `SourceMapConsumer` to control
the fuzzy searching direction. See #167.
* About an 8% speed up in parsing source maps. See #159.
* Added a benchmark for parsing and generating source maps.
## 0.3.0
* Change the default direction that searching for positions fuzzes when there is
not an exact match. See #154.
* Support for environments using json2.js for JSON serialization. See #156.
## 0.2.0
* Support for consuming "indexed" source maps which do not have any remote
sections. See pull request #127. This introduces a minor backwards
incompatibility if you are monkey patching `SourceMapConsumer.prototype`
methods.
## 0.1.43
* Performance improvements for `SourceMapGenerator` and `SourceNode`. See issue
#148 for some discussion and issues #150, #151, and #152 for implementations.
## 0.1.42
* Fix an issue where `SourceNode`s from different versions of the source-map
library couldn't be used in conjunction with each other. See issue #142.
## 0.1.41
* Fix a bug with getting the source content of relative sources with a "./"
prefix. See issue #145 and [Bug 1090768](bugzil.la/1090768).
* Add the `SourceMapConsumer.prototype.computeColumnSpans` method to compute the
column span of each mapping.
* Add the `SourceMapConsumer.prototype.allGeneratedPositionsFor` method to find
all generated positions associated with a given original source and line.
## 0.1.40
* Performance improvements for parsing source maps in SourceMapConsumer.
## 0.1.39
* Fix a bug where setting a source's contents to null before any source content
had been set before threw a TypeError. See issue #131.
## 0.1.38
* Fix a bug where finding relative paths from an empty path were creating
absolute paths. See issue #129.
## 0.1.37
* Fix a bug where if the source root was an empty string, relative source paths
would turn into absolute source paths. Issue #124.
## 0.1.36
* Allow the `names` mapping property to be an empty string. Issue #121.
## 0.1.35
* A third optional parameter was added to `SourceNode.fromStringWithSourceMap`
to specify a path that relative sources in the second parameter should be
relative to. Issue #105.
* If no file property is given to a `SourceMapGenerator`, then the resulting
source map will no longer have a `null` file property. The property will
simply not exist. Issue #104.
* Fixed a bug where consecutive newlines were ignored in `SourceNode`s.
Issue #116.
## 0.1.34
* Make `SourceNode` work with windows style ("\r\n") newlines. Issue #103.
* Fix bug involving source contents and the
`SourceMapGenerator.prototype.applySourceMap`. Issue #100.
## 0.1.33
* Fix some edge cases surrounding path joining and URL resolution.
* Add a third parameter for relative path to
`SourceMapGenerator.prototype.applySourceMap`.
* Fix issues with mappings and EOLs.
## 0.1.32
* Fixed a bug where SourceMapConsumer couldn't handle negative relative columns
(issue 92).
* Fixed test runner to actually report number of failed tests as its process
exit code.
* Fixed a typo when reporting bad mappings (issue 87).
## 0.1.31
* Delay parsing the mappings in SourceMapConsumer until queried for a source
location.
* Support Sass source maps (which at the time of writing deviate from the spec
in small ways) in SourceMapConsumer.
## 0.1.30
* Do not join source root with a source, when the source is a data URI.
* Extend the test runner to allow running single specific test files at a time.
* Performance improvements in `SourceNode.prototype.walk` and
`SourceMapConsumer.prototype.eachMapping`.
* Source map browser builds will now work inside Workers.
* Better error messages when attempting to add an invalid mapping to a
`SourceMapGenerator`.
## 0.1.29
* Allow duplicate entries in the `names` and `sources` arrays of source maps
(usually from TypeScript) we are parsing. Fixes github issue 72.
## 0.1.28
* Skip duplicate mappings when creating source maps from SourceNode; github
issue 75.
## 0.1.27
* Don't throw an error when the `file` property is missing in SourceMapConsumer,
we don't use it anyway.
## 0.1.26
* Fix SourceNode.fromStringWithSourceMap for empty maps. Fixes github issue 70.
## 0.1.25
* Make compatible with browserify
## 0.1.24
* Fix issue with absolute paths and `file://` URIs. See
https://bugzilla.mozilla.org/show_bug.cgi?id=885597
## 0.1.23
* Fix issue with absolute paths and sourcesContent, github issue 64.
## 0.1.22
* Ignore duplicate mappings in SourceMapGenerator. Fixes github issue 21.
## 0.1.21
* Fixed handling of sources that start with a slash so that they are relative to
the source root's host.
## 0.1.20
* Fixed github issue #43: absolute URLs aren't joined with the source root
anymore.
## 0.1.19
* Using Travis CI to run tests.
## 0.1.18
* Fixed a bug in the handling of sourceRoot.
## 0.1.17
* Added SourceNode.fromStringWithSourceMap.
## 0.1.16
* Added missing documentation.
* Fixed the generating of empty mappings in SourceNode.
## 0.1.15
* Added SourceMapGenerator.applySourceMap.
## 0.1.14
* The sourceRoot is now handled consistently.
## 0.1.13
* Added SourceMapGenerator.fromSourceMap.
## 0.1.12
* SourceNode now generates empty mappings too.
## 0.1.11
* Added name support to SourceNode.
## 0.1.10
* Added sourcesContent support to the customer and generator.

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Copyright (c) 2009-2011, Mozilla Foundation and contributors
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the names of the Mozilla Foundation nor the names of project
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# Source Map
[![Build Status](https://travis-ci.org/mozilla/source-map.png?branch=master)](https://travis-ci.org/mozilla/source-map)
[![NPM](https://nodei.co/npm/source-map.png?downloads=true&downloadRank=true)](https://www.npmjs.com/package/source-map)
This is a library to generate and consume the source map format
[described here][format].
[format]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
## Use with Node
$ npm install source-map
## Use on the Web
<script src="https://raw.githubusercontent.com/mozilla/source-map/master/dist/source-map.min.js" defer></script>
--------------------------------------------------------------------------------
<!-- `npm run toc` to regenerate the Table of Contents -->
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
## Table of Contents
- [Examples](#examples)
- [Consuming a source map](#consuming-a-source-map)
- [Generating a source map](#generating-a-source-map)
- [With SourceNode (high level API)](#with-sourcenode-high-level-api)
- [With SourceMapGenerator (low level API)](#with-sourcemapgenerator-low-level-api)
- [API](#api)
- [SourceMapConsumer](#sourcemapconsumer)
- [new SourceMapConsumer(rawSourceMap)](#new-sourcemapconsumerrawsourcemap)
- [SourceMapConsumer.prototype.computeColumnSpans()](#sourcemapconsumerprototypecomputecolumnspans)
- [SourceMapConsumer.prototype.originalPositionFor(generatedPosition)](#sourcemapconsumerprototypeoriginalpositionforgeneratedposition)
- [SourceMapConsumer.prototype.generatedPositionFor(originalPosition)](#sourcemapconsumerprototypegeneratedpositionfororiginalposition)
- [SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)](#sourcemapconsumerprototypeallgeneratedpositionsfororiginalposition)
- [SourceMapConsumer.prototype.hasContentsOfAllSources()](#sourcemapconsumerprototypehascontentsofallsources)
- [SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])](#sourcemapconsumerprototypesourcecontentforsource-returnnullonmissing)
- [SourceMapConsumer.prototype.eachMapping(callback, context, order)](#sourcemapconsumerprototypeeachmappingcallback-context-order)
- [SourceMapGenerator](#sourcemapgenerator)
- [new SourceMapGenerator([startOfSourceMap])](#new-sourcemapgeneratorstartofsourcemap)
- [SourceMapGenerator.fromSourceMap(sourceMapConsumer)](#sourcemapgeneratorfromsourcemapsourcemapconsumer)
- [SourceMapGenerator.prototype.addMapping(mapping)](#sourcemapgeneratorprototypeaddmappingmapping)
- [SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)](#sourcemapgeneratorprototypesetsourcecontentsourcefile-sourcecontent)
- [SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])](#sourcemapgeneratorprototypeapplysourcemapsourcemapconsumer-sourcefile-sourcemappath)
- [SourceMapGenerator.prototype.toString()](#sourcemapgeneratorprototypetostring)
- [SourceNode](#sourcenode)
- [new SourceNode([line, column, source[, chunk[, name]]])](#new-sourcenodeline-column-source-chunk-name)
- [SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])](#sourcenodefromstringwithsourcemapcode-sourcemapconsumer-relativepath)
- [SourceNode.prototype.add(chunk)](#sourcenodeprototypeaddchunk)
- [SourceNode.prototype.prepend(chunk)](#sourcenodeprototypeprependchunk)
- [SourceNode.prototype.setSourceContent(sourceFile, sourceContent)](#sourcenodeprototypesetsourcecontentsourcefile-sourcecontent)
- [SourceNode.prototype.walk(fn)](#sourcenodeprototypewalkfn)
- [SourceNode.prototype.walkSourceContents(fn)](#sourcenodeprototypewalksourcecontentsfn)
- [SourceNode.prototype.join(sep)](#sourcenodeprototypejoinsep)
- [SourceNode.prototype.replaceRight(pattern, replacement)](#sourcenodeprototypereplacerightpattern-replacement)
- [SourceNode.prototype.toString()](#sourcenodeprototypetostring)
- [SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])](#sourcenodeprototypetostringwithsourcemapstartofsourcemap)
<!-- END doctoc generated TOC please keep comment here to allow auto update -->
## Examples
### Consuming a source map
```js
var rawSourceMap = {
version: 3,
file: 'min.js',
names: ['bar', 'baz', 'n'],
sources: ['one.js', 'two.js'],
sourceRoot: 'http://example.com/www/js/',
mappings: 'CAAC,IAAI,IAAM,SAAUA,GAClB,OAAOC,IAAID;CCDb,IAAI,IAAM,SAAUE,GAClB,OAAOA'
};
var smc = new SourceMapConsumer(rawSourceMap);
console.log(smc.sources);
// [ 'http://example.com/www/js/one.js',
// 'http://example.com/www/js/two.js' ]
console.log(smc.originalPositionFor({
line: 2,
column: 28
}));
// { source: 'http://example.com/www/js/two.js',
// line: 2,
// column: 10,
// name: 'n' }
console.log(smc.generatedPositionFor({
source: 'http://example.com/www/js/two.js',
line: 2,
column: 10
}));
// { line: 2, column: 28 }
smc.eachMapping(function (m) {
// ...
});
```
### Generating a source map
In depth guide:
[**Compiling to JavaScript, and Debugging with Source Maps**](https://hacks.mozilla.org/2013/05/compiling-to-javascript-and-debugging-with-source-maps/)
#### With SourceNode (high level API)
```js
function compile(ast) {
switch (ast.type) {
case 'BinaryExpression':
return new SourceNode(
ast.location.line,
ast.location.column,
ast.location.source,
[compile(ast.left), " + ", compile(ast.right)]
);
case 'Literal':
return new SourceNode(
ast.location.line,
ast.location.column,
ast.location.source,
String(ast.value)
);
// ...
default:
throw new Error("Bad AST");
}
}
var ast = parse("40 + 2", "add.js");
console.log(compile(ast).toStringWithSourceMap({
file: 'add.js'
}));
// { code: '40 + 2',
// map: [object SourceMapGenerator] }
```
#### With SourceMapGenerator (low level API)
```js
var map = new SourceMapGenerator({
file: "source-mapped.js"
});
map.addMapping({
generated: {
line: 10,
column: 35
},
source: "foo.js",
original: {
line: 33,
column: 2
},
name: "christopher"
});
console.log(map.toString());
// '{"version":3,"file":"source-mapped.js","sources":["foo.js"],"names":["christopher"],"mappings":";;;;;;;;;mCAgCEA"}'
```
## API
Get a reference to the module:
```js
// Node.js
var sourceMap = require('source-map');
// Browser builds
var sourceMap = window.sourceMap;
// Inside Firefox
const sourceMap = require("devtools/toolkit/sourcemap/source-map.js");
```
### SourceMapConsumer
A SourceMapConsumer instance represents a parsed source map which we can query
for information about the original file positions by giving it a file position
in the generated source.
#### new SourceMapConsumer(rawSourceMap)
The only parameter is the raw source map (either as a string which can be
`JSON.parse`'d, or an object). According to the spec, source maps have the
following attributes:
* `version`: Which version of the source map spec this map is following.
* `sources`: An array of URLs to the original source files.
* `names`: An array of identifiers which can be referenced by individual
mappings.
* `sourceRoot`: Optional. The URL root from which all sources are relative.
* `sourcesContent`: Optional. An array of contents of the original source files.
* `mappings`: A string of base64 VLQs which contain the actual mappings.
* `file`: Optional. The generated filename this source map is associated with.
```js
var consumer = new sourceMap.SourceMapConsumer(rawSourceMapJsonData);
```
#### SourceMapConsumer.prototype.computeColumnSpans()
Compute the last column for each generated mapping. The last column is
inclusive.
```js
// Before:
consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1 },
// { line: 2,
// column: 10 },
// { line: 2,
// column: 20 } ]
consumer.computeColumnSpans();
// After:
consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1,
// lastColumn: 9 },
// { line: 2,
// column: 10,
// lastColumn: 19 },
// { line: 2,
// column: 20,
// lastColumn: Infinity } ]
```
#### SourceMapConsumer.prototype.originalPositionFor(generatedPosition)
Returns the original source, line, and column information for the generated
source's line and column positions provided. The only argument is an object with
the following properties:
* `line`: The line number in the generated source. Line numbers in
this library are 1-based (note that the underlying source map
specification uses 0-based line numbers -- this library handles the
translation).
* `column`: The column number in the generated source. Column numbers
in this library are 0-based.
* `bias`: Either `SourceMapConsumer.GREATEST_LOWER_BOUND` or
`SourceMapConsumer.LEAST_UPPER_BOUND`. Specifies whether to return the closest
element that is smaller than or greater than the one we are searching for,
respectively, if the exact element cannot be found. Defaults to
`SourceMapConsumer.GREATEST_LOWER_BOUND`.
and an object is returned with the following properties:
* `source`: The original source file, or null if this information is not
available.
* `line`: The line number in the original source, or null if this information is
not available. The line number is 1-based.
* `column`: The column number in the original source, or null if this
information is not available. The column number is 0-based.
* `name`: The original identifier, or null if this information is not available.
```js
consumer.originalPositionFor({ line: 2, column: 10 })
// { source: 'foo.coffee',
// line: 2,
// column: 2,
// name: null }
consumer.originalPositionFor({ line: 99999999999999999, column: 999999999999999 })
// { source: null,
// line: null,
// column: null,
// name: null }
```
#### SourceMapConsumer.prototype.generatedPositionFor(originalPosition)
Returns the generated line and column information for the original source,
line, and column positions provided. The only argument is an object with
the following properties:
* `source`: The filename of the original source.
* `line`: The line number in the original source. The line number is
1-based.
* `column`: The column number in the original source. The column
number is 0-based.
and an object is returned with the following properties:
* `line`: The line number in the generated source, or null. The line
number is 1-based.
* `column`: The column number in the generated source, or null. The
column number is 0-based.
```js
consumer.generatedPositionFor({ source: "example.js", line: 2, column: 10 })
// { line: 1,
// column: 56 }
```
#### SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)
Returns all generated line and column information for the original source, line,
and column provided. If no column is provided, returns all mappings
corresponding to a either the line we are searching for or the next closest line
that has any mappings. Otherwise, returns all mappings corresponding to the
given line and either the column we are searching for or the next closest column
that has any offsets.
The only argument is an object with the following properties:
* `source`: The filename of the original source.
* `line`: The line number in the original source. The line number is
1-based.
* `column`: Optional. The column number in the original source. The
column number is 0-based.
and an array of objects is returned, each with the following properties:
* `line`: The line number in the generated source, or null. The line
number is 1-based.
* `column`: The column number in the generated source, or null. The
column number is 0-based.
```js
consumer.allGeneratedpositionsfor({ line: 2, source: "foo.coffee" })
// [ { line: 2,
// column: 1 },
// { line: 2,
// column: 10 },
// { line: 2,
// column: 20 } ]
```
#### SourceMapConsumer.prototype.hasContentsOfAllSources()
Return true if we have the embedded source content for every source listed in
the source map, false otherwise.
In other words, if this method returns `true`, then
`consumer.sourceContentFor(s)` will succeed for every source `s` in
`consumer.sources`.
```js
// ...
if (consumer.hasContentsOfAllSources()) {
consumerReadyCallback(consumer);
} else {
fetchSources(consumer, consumerReadyCallback);
}
// ...
```
#### SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])
Returns the original source content for the source provided. The only
argument is the URL of the original source file.
If the source content for the given source is not found, then an error is
thrown. Optionally, pass `true` as the second param to have `null` returned
instead.
```js
consumer.sources
// [ "my-cool-lib.clj" ]
consumer.sourceContentFor("my-cool-lib.clj")
// "..."
consumer.sourceContentFor("this is not in the source map");
// Error: "this is not in the source map" is not in the source map
consumer.sourceContentFor("this is not in the source map", true);
// null
```
#### SourceMapConsumer.prototype.eachMapping(callback, context, order)
Iterate over each mapping between an original source/line/column and a
generated line/column in this source map.
* `callback`: The function that is called with each mapping. Mappings have the
form `{ source, generatedLine, generatedColumn, originalLine, originalColumn,
name }`
* `context`: Optional. If specified, this object will be the value of `this`
every time that `callback` is called.
* `order`: Either `SourceMapConsumer.GENERATED_ORDER` or
`SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to iterate over
the mappings sorted by the generated file's line/column order or the
original's source/line/column order, respectively. Defaults to
`SourceMapConsumer.GENERATED_ORDER`.
```js
consumer.eachMapping(function (m) { console.log(m); })
// ...
// { source: 'illmatic.js',
// generatedLine: 1,
// generatedColumn: 0,
// originalLine: 1,
// originalColumn: 0,
// name: null }
// { source: 'illmatic.js',
// generatedLine: 2,
// generatedColumn: 0,
// originalLine: 2,
// originalColumn: 0,
// name: null }
// ...
```
### SourceMapGenerator
An instance of the SourceMapGenerator represents a source map which is being
built incrementally.
#### new SourceMapGenerator([startOfSourceMap])
You may pass an object with the following properties:
* `file`: The filename of the generated source that this source map is
associated with.
* `sourceRoot`: A root for all relative URLs in this source map.
* `skipValidation`: Optional. When `true`, disables validation of mappings as
they are added. This can improve performance but should be used with
discretion, as a last resort. Even then, one should avoid using this flag when
running tests, if possible.
```js
var generator = new sourceMap.SourceMapGenerator({
file: "my-generated-javascript-file.js",
sourceRoot: "http://example.com/app/js/"
});
```
#### SourceMapGenerator.fromSourceMap(sourceMapConsumer)
Creates a new `SourceMapGenerator` from an existing `SourceMapConsumer` instance.
* `sourceMapConsumer` The SourceMap.
```js
var generator = sourceMap.SourceMapGenerator.fromSourceMap(consumer);
```
#### SourceMapGenerator.prototype.addMapping(mapping)
Add a single mapping from original source line and column to the generated
source's line and column for this source map being created. The mapping object
should have the following properties:
* `generated`: An object with the generated line and column positions.
* `original`: An object with the original line and column positions.
* `source`: The original source file (relative to the sourceRoot).
* `name`: An optional original token name for this mapping.
```js
generator.addMapping({
source: "module-one.scm",
original: { line: 128, column: 0 },
generated: { line: 3, column: 456 }
})
```
#### SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)
Set the source content for an original source file.
* `sourceFile` the URL of the original source file.
* `sourceContent` the content of the source file.
```js
generator.setSourceContent("module-one.scm",
fs.readFileSync("path/to/module-one.scm"))
```
#### SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])
Applies a SourceMap for a source file to the SourceMap.
Each mapping to the supplied source file is rewritten using the
supplied SourceMap. Note: The resolution for the resulting mappings
is the minimum of this map and the supplied map.
* `sourceMapConsumer`: The SourceMap to be applied.
* `sourceFile`: Optional. The filename of the source file.
If omitted, sourceMapConsumer.file will be used, if it exists.
Otherwise an error will be thrown.
* `sourceMapPath`: Optional. The dirname of the path to the SourceMap
to be applied. If relative, it is relative to the SourceMap.
This parameter is needed when the two SourceMaps aren't in the same
directory, and the SourceMap to be applied contains relative source
paths. If so, those relative source paths need to be rewritten
relative to the SourceMap.
If omitted, it is assumed that both SourceMaps are in the same directory,
thus not needing any rewriting. (Supplying `'.'` has the same effect.)
#### SourceMapGenerator.prototype.toString()
Renders the source map being generated to a string.
```js
generator.toString()
// '{"version":3,"sources":["module-one.scm"],"names":[],"mappings":"...snip...","file":"my-generated-javascript-file.js","sourceRoot":"http://example.com/app/js/"}'
```
### SourceNode
SourceNodes provide a way to abstract over interpolating and/or concatenating
snippets of generated JavaScript source code, while maintaining the line and
column information associated between those snippets and the original source
code. This is useful as the final intermediate representation a compiler might
use before outputting the generated JS and source map.
#### new SourceNode([line, column, source[, chunk[, name]]])
* `line`: The original line number associated with this source node, or null if
it isn't associated with an original line. The line number is 1-based.
* `column`: The original column number associated with this source node, or null
if it isn't associated with an original column. The column number
is 0-based.
* `source`: The original source's filename; null if no filename is provided.
* `chunk`: Optional. Is immediately passed to `SourceNode.prototype.add`, see
below.
* `name`: Optional. The original identifier.
```js
var node = new SourceNode(1, 2, "a.cpp", [
new SourceNode(3, 4, "b.cpp", "extern int status;\n"),
new SourceNode(5, 6, "c.cpp", "std::string* make_string(size_t n);\n"),
new SourceNode(7, 8, "d.cpp", "int main(int argc, char** argv) {}\n"),
]);
```
#### SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])
Creates a SourceNode from generated code and a SourceMapConsumer.
* `code`: The generated code
* `sourceMapConsumer` The SourceMap for the generated code
* `relativePath` The optional path that relative sources in `sourceMapConsumer`
should be relative to.
```js
var consumer = new SourceMapConsumer(fs.readFileSync("path/to/my-file.js.map", "utf8"));
var node = SourceNode.fromStringWithSourceMap(fs.readFileSync("path/to/my-file.js"),
consumer);
```
#### SourceNode.prototype.add(chunk)
Add a chunk of generated JS to this source node.
* `chunk`: A string snippet of generated JS code, another instance of
`SourceNode`, or an array where each member is one of those things.
```js
node.add(" + ");
node.add(otherNode);
node.add([leftHandOperandNode, " + ", rightHandOperandNode]);
```
#### SourceNode.prototype.prepend(chunk)
Prepend a chunk of generated JS to this source node.
* `chunk`: A string snippet of generated JS code, another instance of
`SourceNode`, or an array where each member is one of those things.
```js
node.prepend("/** Build Id: f783haef86324gf **/\n\n");
```
#### SourceNode.prototype.setSourceContent(sourceFile, sourceContent)
Set the source content for a source file. This will be added to the
`SourceMap` in the `sourcesContent` field.
* `sourceFile`: The filename of the source file
* `sourceContent`: The content of the source file
```js
node.setSourceContent("module-one.scm",
fs.readFileSync("path/to/module-one.scm"))
```
#### SourceNode.prototype.walk(fn)
Walk over the tree of JS snippets in this node and its children. The walking
function is called once for each snippet of JS and is passed that snippet and
the its original associated source's line/column location.
* `fn`: The traversal function.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.walk(function (code, loc) { console.log("WALK:", code, loc); })
// WALK: uno { source: 'b.js', line: 3, column: 4, name: null }
// WALK: dos { source: 'a.js', line: 1, column: 2, name: null }
// WALK: tres { source: 'a.js', line: 1, column: 2, name: null }
// WALK: quatro { source: 'c.js', line: 5, column: 6, name: null }
```
#### SourceNode.prototype.walkSourceContents(fn)
Walk over the tree of SourceNodes. The walking function is called for each
source file content and is passed the filename and source content.
* `fn`: The traversal function.
```js
var a = new SourceNode(1, 2, "a.js", "generated from a");
a.setSourceContent("a.js", "original a");
var b = new SourceNode(1, 2, "b.js", "generated from b");
b.setSourceContent("b.js", "original b");
var c = new SourceNode(1, 2, "c.js", "generated from c");
c.setSourceContent("c.js", "original c");
var node = new SourceNode(null, null, null, [a, b, c]);
node.walkSourceContents(function (source, contents) { console.log("WALK:", source, ":", contents); })
// WALK: a.js : original a
// WALK: b.js : original b
// WALK: c.js : original c
```
#### SourceNode.prototype.join(sep)
Like `Array.prototype.join` except for SourceNodes. Inserts the separator
between each of this source node's children.
* `sep`: The separator.
```js
var lhs = new SourceNode(1, 2, "a.rs", "my_copy");
var operand = new SourceNode(3, 4, "a.rs", "=");
var rhs = new SourceNode(5, 6, "a.rs", "orig.clone()");
var node = new SourceNode(null, null, null, [ lhs, operand, rhs ]);
var joinedNode = node.join(" ");
```
#### SourceNode.prototype.replaceRight(pattern, replacement)
Call `String.prototype.replace` on the very right-most source snippet. Useful
for trimming white space from the end of a source node, etc.
* `pattern`: The pattern to replace.
* `replacement`: The thing to replace the pattern with.
```js
// Trim trailing white space.
node.replaceRight(/\s*$/, "");
```
#### SourceNode.prototype.toString()
Return the string representation of this source node. Walks over the tree and
concatenates all the various snippets together to one string.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.toString()
// 'unodostresquatro'
```
#### SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])
Returns the string representation of this tree of source nodes, plus a
SourceMapGenerator which contains all the mappings between the generated and
original sources.
The arguments are the same as those to `new SourceMapGenerator`.
```js
var node = new SourceNode(1, 2, "a.js", [
new SourceNode(3, 4, "b.js", "uno"),
"dos",
[
"tres",
new SourceNode(5, 6, "c.js", "quatro")
]
]);
node.toStringWithSourceMap({ file: "my-output-file.js" })
// { code: 'unodostresquatro',
// map: [object SourceMapGenerator] }
```

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