mirror of https://github.com/webpack/webpack.git
104 lines
3.4 KiB
JavaScript
104 lines
3.4 KiB
JavaScript
/*
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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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var SourceMapConsumer = require("webpack-core/lib/source-map").SourceMapConsumer;
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var SourceMapSource = require("webpack-core/lib/SourceMapSource");
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var RequestShortener = require("../RequestShortener");
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var uglify = require("uglify-js");
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function UglifyJsPlugin(context, options) {
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if(typeof options !== "object") options = {};
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if(typeof options.compressor !== "undefined") {
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options.compress = options.compressor;
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}
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this.options = options;
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this.requestShortener = new RequestShortener(context);
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}
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module.exports = UglifyJsPlugin;
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UglifyJsPlugin.prototype.apply = function(compiler) {
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var options = this.options;
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var requestShortener = this.requestShortener;
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compiler.plugin("compilation", function(compilation) {
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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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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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chunk.files.forEach(function(file) {
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files.push(file);
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});
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});
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compilation.additionalChunkAssets.forEach(function(file) {
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files.push(file);
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});
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files.forEach(function(file) {
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var oldWarnFunction = uglify.AST_Node.warn_function;
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var warnings = [];
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try {
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var asset = compilation.assets[file];
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var input = asset.source();
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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 inputSourceMap = asset.map();
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var sourceMap = new SourceMapConsumer(inputSourceMap);
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uglify.AST_Node.warn_function = function(warning) {
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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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warnings.push(warning.replace(/\[.+:([0-9]+),([0-9]+)\]/, "") +
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"[" + requestShortener.shorten(original.source) + ":" + original.line + "," + original.column + "]");
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};
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var ast = uglify.parse(input, {
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filename: file
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});
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ast.figure_out_scope()
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if(options.compress !== false) {
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var compress = uglify.Compressor(options.compress);
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ast = ast.transform(compress);
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ast.figure_out_scope();
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if(options.mangle !== false) {
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ast.compute_char_frequency(options.mangle || {});
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ast.mangle_names(options.mangle || {});
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}
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}
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var map = null;
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map = uglify.SourceMap({
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file: file,
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root: ""
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});
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var stream = uglify.OutputStream({
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comments: options.comments || /^\**!|@preserve|@license/,
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beautify: options.beautify,
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source_map: map
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});
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ast.print(stream);
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map = map + "";
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stream = stream + "";
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asset.__UglifyJsPlugin = compilation.assets[file] = new SourceMapSource(stream, file, map, input, inputSourceMap);
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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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err.file = file;
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compilation.errors.push(err);
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} finally {
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uglify.AST_Node.warn_function = oldWarnFunction;
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}
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});
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callback();
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});
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compilation.plugin("normal-module-loader", function(context) {
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context.minimize = true;
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});
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});
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}; |