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node_modules/source-list-map/lib/helpers.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+exports.getNumberOfLines = function getNumberOfLines(str) {
+	let nr = -1;
+	let idx = -1;
+	do {
+		nr++
+		idx = str.indexOf("\n", idx + 1);
+	} while(idx >= 0);
+	return nr;
+};
+
+exports.getUnfinishedLine = function getUnfinishedLine(str) {
+	const idx = str.lastIndexOf("\n");
+	if(idx === -1)
+		return str.length;
+	else
+		return str.length - idx - 1;
+};