Page MenuHomec4science
Files F92223059

EvalSourceMapDevToolPlugin.js
No OneTemporary
Actions

File Metadata

Created
Mon, Nov 18, 12:16

EvalSourceMapDevToolPlugin.js
View Options

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { ConcatSource, RawSource } = require("webpack-sources");
const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
const NormalModule = require("./NormalModule");
const SourceMapDevToolModuleOptionsPlugin = require("./SourceMapDevToolModuleOptionsPlugin");
const JavascriptModulesPlugin = require("./javascript/JavascriptModulesPlugin");
const ConcatenatedModule = require("./optimize/ConcatenatedModule");
const { absolutify } = require("./util/identifier");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../declarations/WebpackOptions").DevTool} DevToolOptions */
/** @typedef {import("../declarations/plugins/SourceMapDevToolPlugin").SourceMapDevToolPluginOptions} SourceMapDevToolPluginOptions */
/** @typedef {import("./Compiler")} Compiler */
/** @type {WeakMap<Source, Source>} */
const cache = new WeakMap();
const devtoolWarning = new RawSource(`/*
* ATTENTION: An "eval-source-map" devtool has been used.
* This devtool is not neither made for production nor for readable output files.
* It uses "eval()" calls to create a separate source file with attached SourceMaps in the browser devtools.
* If you are trying to read the output file, select a different devtool (https://webpack.js.org/configuration/devtool/)
* or disable the default devtool with "devtool: false".
* If you are looking for production-ready output files, see mode: "production" (https://webpack.js.org/configuration/mode/).
*/
`);
class EvalSourceMapDevToolPlugin {
/**
* @param {SourceMapDevToolPluginOptions|string} inputOptions Options object
*/
constructor(inputOptions) {
/** @type {SourceMapDevToolPluginOptions} */
let options;
if (typeof inputOptions === "string") {
options = {
append: inputOptions
};
} else {
options = inputOptions;
}
this.sourceMapComment =
options.append || "//# sourceURL=[module]\n//# sourceMappingURL=[url]";
this.moduleFilenameTemplate =
options.moduleFilenameTemplate ||
"webpack://[namespace]/[resource-path]?[hash]";
this.namespace = options.namespace || "";
this.options = options;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
const options = this.options;
compiler.hooks.compilation.tap(
"EvalSourceMapDevToolPlugin",
compilation => {
const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
new SourceMapDevToolModuleOptionsPlugin(options).apply(compilation);
const matchModule = ModuleFilenameHelpers.matchObject.bind(
ModuleFilenameHelpers,
options
);
hooks.renderModuleContent.tap(
"EvalSourceMapDevToolPlugin",
(source, m, { runtimeTemplate, chunkGraph }) => {
const cachedSource = cache.get(source);
if (cachedSource !== undefined) {
return cachedSource;
}
if (m instanceof NormalModule) {
const module = /** @type {NormalModule} */ (m);
if (!matchModule(module.resource)) {
return source;
}
} else if (m instanceof ConcatenatedModule) {
const concatModule = /** @type {ConcatenatedModule} */ (m);
if (concatModule.rootModule instanceof NormalModule) {
const module = /** @type {NormalModule} */ (concatModule.rootModule);
if (!matchModule(module.resource)) {
return source;
}
} else {
return source;
}
} else {
return source;
}
/** @type {{ [key: string]: TODO; }} */
let sourceMap;
let content;
if (source.sourceAndMap) {
const sourceAndMap = source.sourceAndMap(options);
sourceMap = sourceAndMap.map;
content = sourceAndMap.source;
} else {
sourceMap = source.map(options);
content = source.source();
}
if (!sourceMap) {
return source;
}
// Clone (flat) the sourcemap to ensure that the mutations below do not persist.
sourceMap = { ...sourceMap };
const context = compiler.options.context;
const root = compiler.root;
const modules = sourceMap.sources.map(source => {
if (!source.startsWith("webpack://")) return source;
source = absolutify(context, source.slice(10), root);
const module = compilation.findModule(source);
return module || source;
});
let moduleFilenames = modules.map(module => {
return ModuleFilenameHelpers.createFilename(
module,
{
moduleFilenameTemplate: this.moduleFilenameTemplate,
namespace: this.namespace
},
{
requestShortener: runtimeTemplate.requestShortener,
chunkGraph
}
);
});
moduleFilenames = ModuleFilenameHelpers.replaceDuplicates(
moduleFilenames,
(filename, i, n) => {
for (let j = 0; j < n; j++) filename += "*";
return filename;
}
);
sourceMap.sources = moduleFilenames;
sourceMap.sourceRoot = options.sourceRoot || "";
const moduleId = chunkGraph.getModuleId(m);
sourceMap.file = `${moduleId}.js`;
const footer =
this.sourceMapComment.replace(
/\[url\]/g,
`data:application/json;charset=utf-8;base64,${Buffer.from(
JSON.stringify(sourceMap),
"utf8"
).toString("base64")}`
) + `\n//# sourceURL=webpack-internal:///${moduleId}\n`; // workaround for chrome bug
const evalSource = new RawSource(
`eval(${JSON.stringify(content + footer)});`
);
cache.set(source, evalSource);
return evalSource;
}
);
hooks.render.tap(
"EvalSourceMapDevToolPlugin",
source => new ConcatSource(devtoolWarning, source)
);
hooks.chunkHash.tap("EvalSourceMapDevToolPlugin", (chunk, hash) => {
hash.update("EvalSourceMapDevToolPlugin");
hash.update("2");
});
}
);
}
}
module.exports = EvalSourceMapDevToolPlugin;

Event Timeline

c4science · Help