Method _codeGenerationModule

lib/Compilation.js:4091–4155

* Code generation module. * @param {Module} module module * @param {RuntimeSpec} runtime runtime * @param {RuntimeSpec[]} runtimes runtimes * @param {string} hash hash * @param {DependencyTemplates} dependencyTemplates dependencyTemplates * @param {ChunkGraph} chunkGraph chunkGraph * @

(
		module,
		runtime,
		runtimes,
		hash,
		dependencyTemplates,
		chunkGraph,
		moduleGraph,
		runtimeTemplate,
		errors,
		results,
		callback
	)

	 * @param {(err?: WebpackError | null, result?: boolean) => void} callback callback
	 */
	_codeGenerationModule(
		module,
		runtime,
		runtimes,
		hash,
		dependencyTemplates,
		chunkGraph,
		moduleGraph,
		runtimeTemplate,
		errors,
		results,
		callback
	) {
		let codeGenerated = false;
		const cache = new MultiItemCache(
			runtimes.map((runtime) =>
				this._codeGenerationCache.getItemCache(
					`${module.identifier()}|${getRuntimeKey(runtime)}`,
					`${hash}|${dependencyTemplates.getHash()}`
				)
			)
		);
		cache.get((err, cachedResult) => {
			if (err) return callback(/** @type {WebpackError} */ (err));
			/** @type {CodeGenerationResult} */
			let result;
			if (!cachedResult) {
				try {
					codeGenerated = true;
					this.codeGeneratedModules.add(module);
					result = module.codeGeneration({
						chunkGraph,
						moduleGraph,
						dependencyTemplates,
						runtimeTemplate,
						runtime,
						runtimes,
						codeGenerationResults: results,
						compilation: this
					});
				} catch (err) {
					errors.push(
						new CodeGenerationError(module, /** @type {Error} */ (err))
					);
					result = cachedResult = {
						sources: new Map(),
						runtimeRequirements: null,
						data: undefined
					};
				}
			} else {
				result = cachedResult;
			}
			for (const runtime of runtimes) {
				results.add(module, runtime, result);
			}
			if (!cachedResult) {
				cache.store(result, (err) =>