马宇豪
2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18
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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
 
"use strict";
 
const { ConcatSource, RawSource } = require("webpack-sources");
const ExternalModule = require("./ExternalModule");
const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
const RuntimeGlobals = require("./RuntimeGlobals");
const JavascriptModulesPlugin = require("./javascript/JavascriptModulesPlugin");
 
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("./Compiler")} Compiler */
 
/** @type {WeakMap<Source, Source>} */
const cache = new WeakMap();
 
const devtoolWarning = new RawSource(`/*
 * ATTENTION: The "eval" devtool has been used (maybe by default in mode: "development").
 * This devtool is neither made for production nor for readable output files.
 * It uses "eval()" calls to create a separate source file 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 EvalDevToolModulePlugin {
    constructor(options) {
        this.namespace = options.namespace || "";
        this.sourceUrlComment = options.sourceUrlComment || "\n//# sourceURL=[url]";
        this.moduleFilenameTemplate =
            options.moduleFilenameTemplate ||
            "webpack://[namespace]/[resourcePath]?[loaders]";
    }
 
    /**
     * Apply the plugin
     * @param {Compiler} compiler the compiler instance
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.compilation.tap("EvalDevToolModulePlugin", compilation => {
            const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
            hooks.renderModuleContent.tap(
                "EvalDevToolModulePlugin",
                (source, module, { runtimeTemplate, chunkGraph }) => {
                    const cacheEntry = cache.get(source);
                    if (cacheEntry !== undefined) return cacheEntry;
                    if (module instanceof ExternalModule) {
                        cache.set(source, source);
                        return source;
                    }
                    const content = source.source();
                    const str = ModuleFilenameHelpers.createFilename(
                        module,
                        {
                            moduleFilenameTemplate: this.moduleFilenameTemplate,
                            namespace: this.namespace
                        },
                        {
                            requestShortener: runtimeTemplate.requestShortener,
                            chunkGraph,
                            hashFunction: compilation.outputOptions.hashFunction
                        }
                    );
                    const footer =
                        "\n" +
                        this.sourceUrlComment.replace(
                            /\[url\]/g,
                            encodeURI(str)
                                .replace(/%2F/g, "/")
                                .replace(/%20/g, "_")
                                .replace(/%5E/g, "^")
                                .replace(/%5C/g, "\\")
                                .replace(/^\//, "")
                        );
                    const result = new RawSource(
                        `eval(${
                            compilation.outputOptions.trustedTypes
                                ? `${RuntimeGlobals.createScript}(${JSON.stringify(
                                        content + footer
                                  )})`
                                : JSON.stringify(content + footer)
                        });`
                    );
                    cache.set(source, result);
                    return result;
                }
            );
            hooks.inlineInRuntimeBailout.tap(
                "EvalDevToolModulePlugin",
                () => "the eval devtool is used."
            );
            hooks.render.tap(
                "EvalDevToolModulePlugin",
                source => new ConcatSource(devtoolWarning, source)
            );
            hooks.chunkHash.tap("EvalDevToolModulePlugin", (chunk, hash) => {
                hash.update("EvalDevToolModulePlugin");
                hash.update("2");
            });
            if (compilation.outputOptions.trustedTypes) {
                compilation.hooks.additionalModuleRuntimeRequirements.tap(
                    "EvalDevToolModulePlugin",
                    (module, set, context) => {
                        set.add(RuntimeGlobals.createScript);
                    }
                );
            }
        });
    }
}
 
module.exports = EvalDevToolModulePlugin;