253 lines
11 KiB
JavaScript
253 lines
11 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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var SourceMapConsumer = require("source-map").SourceMapConsumer;
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var SourceMapSource = require("webpack-sources").SourceMapSource;
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var RawSource = require("webpack-sources").RawSource;
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var ConcatSource = require("webpack-sources").ConcatSource;
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var RequestShortener = require("webpack/lib/RequestShortener");
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var ModuleFilenameHelpers = require("webpack/lib/ModuleFilenameHelpers");
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var uglify = require("uglify-js");
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var UglifyJsPlugin = function () {
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function UglifyJsPlugin(options) {
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_classCallCheck(this, UglifyJsPlugin);
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if ((typeof options === "undefined" ? "undefined" : _typeof(options)) !== "object" || Array.isArray(options)) options = {};
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if (typeof options.compressor !== "undefined") options.compress = options.compressor;
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this.options = options;
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}
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_createClass(UglifyJsPlugin, [{
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key: "apply",
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value: function apply(compiler) {
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var options = this.options;
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options.test = options.test || /\.js($|\?)/i;
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var warningsFilter = options.warningsFilter || function () {
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return true;
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};
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var requestShortener = new RequestShortener(compiler.context);
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compiler.plugin("compilation", function (compilation) {
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if (options.sourceMap) {
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compilation.plugin("build-module", function (module) {
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// to get detailed location info about errors
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module.useSourceMap = true;
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});
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}
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compilation.plugin("optimize-chunk-assets", function (chunks, callback) {
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var files = [];
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chunks.forEach(function (chunk) {
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return files.push.apply(files, chunk.files);
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});
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files.push.apply(files, compilation.additionalChunkAssets);
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var filteredFiles = files.filter(ModuleFilenameHelpers.matchObject.bind(undefined, options));
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filteredFiles.forEach(function (file) {
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var oldWarnFunction = uglify.AST_Node.warn_function;
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var warnings = [];
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var sourceMap = void 0;
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try {
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var asset = compilation.assets[file];
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if (asset.__UglifyJsPlugin) {
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compilation.assets[file] = asset.__UglifyJsPlugin;
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return;
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}
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var input = void 0;
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var inputSourceMap = void 0;
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if (options.sourceMap) {
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if (asset.sourceAndMap) {
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var sourceAndMap = asset.sourceAndMap();
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inputSourceMap = sourceAndMap.map;
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input = sourceAndMap.source;
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} else {
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inputSourceMap = asset.map();
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input = asset.source();
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}
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sourceMap = new SourceMapConsumer(inputSourceMap);
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uglify.AST_Node.warn_function = function (warning) {
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// eslint-disable-line camelcase
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var match = /\[.+:([0-9]+),([0-9]+)\]/.exec(warning);
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var line = +match[1];
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var column = +match[2];
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var original = sourceMap.originalPositionFor({
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line: line,
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column: column
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});
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if (!original || !original.source || original.source === file) return;
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if (!warningsFilter(original.source)) return;
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warnings.push(warning.replace(/\[.+:([0-9]+),([0-9]+)\]/, "") + "[" + requestShortener.shorten(original.source) + ":" + original.line + "," + original.column + "]");
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};
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} else {
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input = asset.source();
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uglify.AST_Node.warn_function = function (warning) {
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// eslint-disable-line camelcase
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warnings.push(warning);
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};
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}
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uglify.base54.reset();
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var ast = uglify.parse(input, {
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filename: file
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});
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if (options.compress !== false) {
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ast.figure_out_scope();
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var compress = uglify.Compressor(options.compress || {
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warnings: false
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}); // eslint-disable-line new-cap
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ast = compress.compress(ast);
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}
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if (options.mangle !== false) {
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ast.figure_out_scope(options.mangle || {});
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ast.compute_char_frequency(options.mangle || {});
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ast.mangle_names(options.mangle || {});
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if (options.mangle && options.mangle.props) {
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uglify.mangle_properties(ast, options.mangle.props);
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}
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}
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var output = {};
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output.comments = Object.prototype.hasOwnProperty.call(options, "comments") ? options.comments : /^\**!|@preserve|@license/;
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output.beautify = options.beautify;
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for (var k in options.output) {
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output[k] = options.output[k];
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}
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var extractedComments = [];
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if (options.extractComments) {
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var condition = {};
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if (typeof options.extractComments === "string" || options.extractComments instanceof RegExp) {
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// extractComments specifies the extract condition and output.comments specifies the preserve condition
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condition.preserve = output.comments;
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condition.extract = options.extractComments;
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} else if (Object.prototype.hasOwnProperty.call(options.extractComments, "condition")) {
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// Extract condition is given in extractComments.condition
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condition.preserve = output.comments;
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condition.extract = options.extractComments.condition;
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} else {
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// No extract condition is given. Extract comments that match output.comments instead of preserving them
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condition.preserve = false;
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condition.extract = output.comments;
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}
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// Ensure that both conditions are functions
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["preserve", "extract"].forEach(function (key) {
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switch (_typeof(condition[key])) {
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case "boolean":
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var b = condition[key];
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condition[key] = function () {
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return b;
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};
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break;
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case "function":
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break;
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case "string":
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if (condition[key] === "all") {
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condition[key] = function () {
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return true;
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};
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break;
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}
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var regex = new RegExp(condition[key]);
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condition[key] = function (astNode, comment) {
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return regex.test(comment.value);
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};
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break;
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default:
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regex = condition[key];
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condition[key] = function (astNode, comment) {
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return regex.test(comment.value);
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};
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}
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});
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// Redefine the comments function to extract and preserve
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// comments according to the two conditions
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output.comments = function (astNode, comment) {
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if (condition.extract(astNode, comment)) {
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extractedComments.push(comment.type === "comment2" ? "/*" + comment.value + "*/" : "//" + comment.value);
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}
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return condition.preserve(astNode, comment);
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};
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}
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var map = void 0;
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if (options.sourceMap) {
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map = uglify.SourceMap({ // eslint-disable-line new-cap
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file: file,
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root: ""
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});
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output.source_map = map; // eslint-disable-line camelcase
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}
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var stream = uglify.OutputStream(output); // eslint-disable-line new-cap
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ast.print(stream);
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if (map) map = map + "";
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var stringifiedStream = stream + "";
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var outputSource = map ? new SourceMapSource(stringifiedStream, file, JSON.parse(map), input, inputSourceMap) : new RawSource(stringifiedStream);
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if (extractedComments.length > 0) {
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var commentsFile = options.extractComments.filename || file + ".LICENSE";
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if (typeof commentsFile === "function") {
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commentsFile = commentsFile(file);
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}
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// Write extracted comments to commentsFile
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var commentsSource = new RawSource(extractedComments.join("\n\n") + "\n");
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if (commentsFile in compilation.assets) {
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// commentsFile already exists, append new comments...
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if (compilation.assets[commentsFile] instanceof ConcatSource) {
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compilation.assets[commentsFile].add("\n");
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compilation.assets[commentsFile].add(commentsSource);
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} else {
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compilation.assets[commentsFile] = new ConcatSource(compilation.assets[commentsFile], "\n", commentsSource);
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}
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} else {
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compilation.assets[commentsFile] = commentsSource;
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}
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// Add a banner to the original file
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if (options.extractComments.banner !== false) {
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var banner = options.extractComments.banner || "For license information please see " + commentsFile;
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if (typeof banner === "function") {
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banner = banner(commentsFile);
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}
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if (banner) {
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outputSource = new ConcatSource("/*! " + banner + " */\n", outputSource);
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}
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}
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}
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asset.__UglifyJsPlugin = compilation.assets[file] = outputSource;
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if (warnings.length > 0) {
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compilation.warnings.push(new Error(file + " from UglifyJs\n" + warnings.join("\n")));
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}
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} catch (err) {
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if (err.line) {
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var original = sourceMap && sourceMap.originalPositionFor({
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line: err.line,
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column: err.col
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});
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if (original && original.source) {
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compilation.errors.push(new Error(file + " from UglifyJs\n" + err.message + " [" + requestShortener.shorten(original.source) + ":" + original.line + "," + original.column + "][" + file + ":" + err.line + "," + err.col + "]"));
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} else {
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compilation.errors.push(new Error(file + " from UglifyJs\n" + err.message + " [" + file + ":" + err.line + "," + err.col + "]"));
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}
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} else if (err.msg) {
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compilation.errors.push(new Error(file + " from UglifyJs\n" + err.msg));
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} else compilation.errors.push(new Error(file + " from UglifyJs\n" + err.stack));
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} finally {
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uglify.AST_Node.warn_function = oldWarnFunction; // eslint-disable-line camelcase
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}
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});
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callback();
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});
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});
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}
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}]);
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return UglifyJsPlugin;
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}();
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module.exports = UglifyJsPlugin;
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