Method apply

lib/EvalSourceMapDevToolPlugin.js:77–249

* Applies the plugin by registering its hooks on the compiler. * @param {Compiler} compiler the compiler instance * @returns {void}

(compiler)

	 * @returns {void}
	 */
	apply(compiler) {
		const options = this.options;
		compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
			const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
			new SourceMapDevToolModuleOptionsPlugin(options).apply(compilation);
			const matchModule = ModuleFilenameHelpers.matchObject.bind(
				ModuleFilenameHelpers,
				options
			);
			hooks.renderModuleContent.tap(
				PLUGIN_NAME,
				(source, m, { chunk, runtimeTemplate, chunkGraph }) => {
					const cachedSource = cache.get(source);
					if (cachedSource !== undefined) {
						return cachedSource;
					}

					/**
					 * Returns result.
					 * @param {Source} r result
					 * @returns {Source} result
					 */
					const result = (r) => {
						cache.set(source, r);
						return r;
					};

					if (m instanceof NormalModule) {
						if (!matchModule(m.resource)) {
							return result(source);
						}
					} else if (m instanceof ConcatenatedModule) {
						if (m.rootModule instanceof NormalModule) {
							if (!matchModule(m.rootModule.resource)) {
								return result(source);
							}
						} else {
							return result(source);
						}
					} else {
						return result(source);
					}

					const namespace = compilation.getPath(this.namespace, {
						chunk
					});
					/** @type {RawSourceMap} */
					let sourceMap;
					/** @type {string | Buffer} */
					let content;
					if (source.sourceAndMap) {
						const sourceAndMap = source.sourceAndMap(options);
						sourceMap = /** @type {RawSourceMap} */ (sourceAndMap.map);
						content = sourceAndMap.source;
					} else {
						sourceMap = /** @type {RawSourceMap} */ (source.map(options));
						content = source.source();
					}