210 lines
7.9 KiB
JavaScript
210 lines
7.9 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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const path = require("path");
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const crypto = require("crypto");
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const RequestShortener = require("./RequestShortener");
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const ConcatSource = require("webpack-sources").ConcatSource;
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const RawSource = require("webpack-sources").RawSource;
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const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
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const SourceMapDevToolModuleOptionsPlugin = require("./SourceMapDevToolModuleOptionsPlugin");
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const basename = (name) => {
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if(name.indexOf("/") < 0) return name;
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return name.substr(name.lastIndexOf("/") + 1);
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};
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function getTaskForFile(file, chunk, options, compilation) {
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const asset = compilation.assets[file];
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if(asset.__SourceMapDevToolFile === file && asset.__SourceMapDevToolData) {
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const data = asset.__SourceMapDevToolData;
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for(const cachedFile in data) {
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compilation.assets[cachedFile] = data[cachedFile];
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if(cachedFile !== file)
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chunk.files.push(cachedFile);
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}
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return;
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}
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let source, sourceMap;
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if(asset.sourceAndMap) {
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const sourceAndMap = asset.sourceAndMap(options);
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sourceMap = sourceAndMap.map;
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source = sourceAndMap.source;
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} else {
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sourceMap = asset.map(options);
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source = asset.source();
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}
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if(sourceMap) {
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return {
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chunk,
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file,
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asset,
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source,
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sourceMap,
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modules: undefined
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};
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}
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}
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class SourceMapDevToolPlugin {
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constructor(options) {
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if(arguments.length > 1)
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throw new Error("SourceMapDevToolPlugin only takes one argument (pass an options object)");
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// TODO: remove in webpack 3
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if(typeof options === "string") {
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options = {
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sourceMapFilename: options
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};
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}
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if(!options) options = {};
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this.sourceMapFilename = options.filename;
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this.sourceMappingURLComment = options.append === false ? false : options.append || "\n//# sourceMappingURL=[url]";
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this.moduleFilenameTemplate = options.moduleFilenameTemplate || "webpack:///[resourcePath]";
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this.fallbackModuleFilenameTemplate = options.fallbackModuleFilenameTemplate || "webpack:///[resourcePath]?[hash]";
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this.options = options;
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}
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apply(compiler) {
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const sourceMapFilename = this.sourceMapFilename;
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const sourceMappingURLComment = this.sourceMappingURLComment;
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const moduleFilenameTemplate = this.moduleFilenameTemplate;
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const fallbackModuleFilenameTemplate = this.fallbackModuleFilenameTemplate;
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const requestShortener = new RequestShortener(compiler.context);
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const options = this.options;
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options.test = options.test || /\.(js|css)($|\?)/i;
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const matchObject = ModuleFilenameHelpers.matchObject.bind(undefined, options);
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compiler.plugin("compilation", compilation => {
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new SourceMapDevToolModuleOptionsPlugin(options).apply(compilation);
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compilation.plugin("after-optimize-chunk-assets", function(chunks) {
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const moduleToSourceNameMapping = new Map();
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const tasks = [];
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chunks.forEach(function(chunk) {
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chunk.files.forEach(file => {
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if(matchObject(file)) {
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const task = getTaskForFile(file, chunk, options, compilation);
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if(task) {
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const modules = task.sourceMap.sources.map(source => {
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const module = compilation.findModule(source);
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return module || source;
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});
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for(let idx = 0; idx < modules.length; idx++) {
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const module = modules[idx];
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if(!moduleToSourceNameMapping.get(module)) {
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moduleToSourceNameMapping.set(module, ModuleFilenameHelpers.createFilename(module, moduleFilenameTemplate, requestShortener));
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}
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}
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task.modules = modules;
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tasks.push(task);
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}
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}
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});
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});
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const usedNamesSet = new Set(moduleToSourceNameMapping.values());
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const conflictDetectionSet = new Set();
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// all modules in defined order (longest identifier first)
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const allModules = Array.from(moduleToSourceNameMapping.keys()).sort((a, b) => {
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const ai = typeof a === "string" ? a : a.identifier();
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const bi = typeof b === "string" ? b : b.identifier();
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return ai.length - bi.length;
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});
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// find modules with conflicting source names
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for(let idx = 0; idx < allModules.length; idx++) {
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const module = allModules[idx];
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let sourceName = moduleToSourceNameMapping.get(module);
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let hasName = conflictDetectionSet.has(sourceName);
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if(!hasName) {
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conflictDetectionSet.add(sourceName);
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continue;
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}
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// try the fallback name first
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sourceName = ModuleFilenameHelpers.createFilename(module, fallbackModuleFilenameTemplate, requestShortener);
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hasName = usedNamesSet.has(sourceName);
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if(!hasName) {
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moduleToSourceNameMapping.set(module, sourceName);
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usedNamesSet.add(sourceName);
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continue;
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}
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// elsewise just append stars until we have a valid name
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while(hasName) {
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sourceName += "*";
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hasName = usedNamesSet.has(sourceName);
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}
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moduleToSourceNameMapping.set(module, sourceName);
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usedNamesSet.add(sourceName);
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}
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tasks.forEach(function(task) {
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const chunk = task.chunk;
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const file = task.file;
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const asset = task.asset;
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const sourceMap = task.sourceMap;
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const source = task.source;
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const modules = task.modules;
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const moduleFilenames = modules.map(m => moduleToSourceNameMapping.get(m));
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sourceMap.sources = moduleFilenames;
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if(sourceMap.sourcesContent && !options.noSources) {
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sourceMap.sourcesContent = sourceMap.sourcesContent.map((content, i) => typeof content === "string" ? `${content}\n\n\n${ModuleFilenameHelpers.createFooter(modules[i], requestShortener)}` : null);
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} else {
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sourceMap.sourcesContent = undefined;
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}
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sourceMap.sourceRoot = options.sourceRoot || "";
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sourceMap.file = file;
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asset.__SourceMapDevToolFile = file;
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asset.__SourceMapDevToolData = {};
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let currentSourceMappingURLComment = sourceMappingURLComment;
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if(currentSourceMappingURLComment !== false && /\.css($|\?)/i.test(file)) {
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currentSourceMappingURLComment = currentSourceMappingURLComment.replace(/^\n\/\/(.*)$/, "\n/*$1*/");
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}
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const sourceMapString = JSON.stringify(sourceMap);
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if(sourceMapFilename) {
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let filename = file;
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let query = "";
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const idx = filename.indexOf("?");
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if(idx >= 0) {
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query = filename.substr(idx);
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filename = filename.substr(0, idx);
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}
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let sourceMapFile = compilation.getPath(sourceMapFilename, {
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chunk,
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filename: options.fileContext ? path.relative(options.fileContext, filename) : filename,
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query,
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basename: basename(filename)
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});
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if(sourceMapFile.indexOf("[contenthash]") !== -1) {
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sourceMapFile = sourceMapFile.replace(/\[contenthash\]/g, crypto.createHash("md5").update(sourceMapString).digest("hex"));
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}
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const sourceMapUrl = options.publicPath ? options.publicPath + sourceMapFile.replace(/\\/g, "/") : path.relative(path.dirname(file), sourceMapFile).replace(/\\/g, "/");
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if(currentSourceMappingURLComment !== false) {
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asset.__SourceMapDevToolData[file] = compilation.assets[file] = new ConcatSource(new RawSource(source), currentSourceMappingURLComment.replace(/\[url\]/g, sourceMapUrl));
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}
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asset.__SourceMapDevToolData[sourceMapFile] = compilation.assets[sourceMapFile] = new RawSource(sourceMapString);
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chunk.files.push(sourceMapFile);
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} else {
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asset.__SourceMapDevToolData[file] = compilation.assets[file] = new ConcatSource(new RawSource(source), currentSourceMappingURLComment
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.replace(/\[map\]/g, () => sourceMapString)
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.replace(/\[url\]/g, () => `data:application/json;charset=utf-8;base64,${new Buffer(sourceMapString, "utf-8").toString("base64")}`) // eslint-disable-line
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);
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}
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});
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});
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});
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}
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}
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module.exports = SourceMapDevToolPlugin;
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