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app_vue/node_modules/webpack/lib/webpack.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const util = require("util");
+const webpackOptionsSchemaCheck = require("../schemas/WebpackOptions.check.js");
+const webpackOptionsSchema = require("../schemas/WebpackOptions.json");
+const Compiler = require("./Compiler");
+const MultiCompiler = require("./MultiCompiler");
+const WebpackOptionsApply = require("./WebpackOptionsApply");
+const {
+	applyWebpackOptionsDefaults,
+	applyWebpackOptionsBaseDefaults
+} = require("./config/defaults");
+const { getNormalizedWebpackOptions } = require("./config/normalization");
+const NodeEnvironmentPlugin = require("./node/NodeEnvironmentPlugin");
+const memoize = require("./util/memoize");
+
+/** @typedef {import("../declarations/WebpackOptions").WebpackOptions} WebpackOptions */
+/** @typedef {import("../declarations/WebpackOptions").WebpackPluginFunction} WebpackPluginFunction */
+/** @typedef {import("./Compiler").WatchOptions} WatchOptions */
+/** @typedef {import("./MultiCompiler").MultiCompilerOptions} MultiCompilerOptions */
+/** @typedef {import("./MultiStats")} MultiStats */
+/** @typedef {import("./Stats")} Stats */
+
+const getValidateSchema = memoize(() => require("./validateSchema"));
+
+/**
+ * @template T
+ * @callback Callback
+ * @param {Error | null} err
+ * @param {T=} stats
+ * @returns {void}
+ */
+
+/**
+ * @param {ReadonlyArray<WebpackOptions>} childOptions options array
+ * @param {MultiCompilerOptions} options options
+ * @returns {MultiCompiler} a multi-compiler
+ */
+const createMultiCompiler = (childOptions, options) => {
+	const compilers = childOptions.map((options, index) =>
+		createCompiler(options, index)
+	);
+	const compiler = new MultiCompiler(compilers, options);
+	for (const childCompiler of compilers) {
+		if (childCompiler.options.dependencies) {
+			compiler.setDependencies(
+				childCompiler,
+				childCompiler.options.dependencies
+			);
+		}
+	}
+	return compiler;
+};
+
+/**
+ * @param {WebpackOptions} rawOptions options object
+ * @param {number=} compilerIndex index of compiler
+ * @returns {Compiler} a compiler
+ */
+const createCompiler = (rawOptions, compilerIndex) => {
+	const options = getNormalizedWebpackOptions(rawOptions);
+	applyWebpackOptionsBaseDefaults(options);
+	const compiler = new Compiler(
+		/** @type {string} */ (options.context),
+		options
+	);
+	new NodeEnvironmentPlugin({
+		infrastructureLogging: options.infrastructureLogging
+	}).apply(compiler);
+	if (Array.isArray(options.plugins)) {
+		for (const plugin of options.plugins) {
+			if (typeof plugin === "function") {
+				/** @type {WebpackPluginFunction} */
+				(plugin).call(compiler, compiler);
+			} else if (plugin) {
+				plugin.apply(compiler);
+			}
+		}
+	}
+	const resolvedDefaultOptions = applyWebpackOptionsDefaults(
+		options,
+		compilerIndex
+	);
+	if (resolvedDefaultOptions.platform) {
+		compiler.platform = resolvedDefaultOptions.platform;
+	}
+	compiler.hooks.environment.call();
+	compiler.hooks.afterEnvironment.call();
+	new WebpackOptionsApply().process(options, compiler);
+	compiler.hooks.initialize.call();
+	return compiler;
+};
+
+/**
+ * @callback WebpackFunctionSingle
+ * @param {WebpackOptions} options options object
+ * @param {Callback<Stats>=} callback callback
+ * @returns {Compiler} the compiler object
+ */
+
+/**
+ * @callback WebpackFunctionMulti
+ * @param {ReadonlyArray<WebpackOptions> & MultiCompilerOptions} options options objects
+ * @param {Callback<MultiStats>=} callback callback
+ * @returns {MultiCompiler} the multi compiler object
+ */
+
+/**
+ * @template T
+ * @param {Array<T> | T} options options
+ * @returns {Array<T>} array of options
+ */
+const asArray = options =>
+	Array.isArray(options) ? Array.from(options) : [options];
+
+const webpack = /** @type {WebpackFunctionSingle & WebpackFunctionMulti} */ (
+	/**
+	 * @param {WebpackOptions | (ReadonlyArray<WebpackOptions> & MultiCompilerOptions)} options options
+	 * @param {Callback<Stats> & Callback<MultiStats>=} callback callback
+	 * @returns {Compiler | MultiCompiler | null} Compiler or MultiCompiler
+	 */
+	(options, callback) => {
+		const create = () => {
+			if (!asArray(options).every(webpackOptionsSchemaCheck)) {
+				getValidateSchema()(webpackOptionsSchema, options);
+				util.deprecate(
+					() => {},
+					"webpack bug: Pre-compiled schema reports error while real schema is happy. This has performance drawbacks.",
+					"DEP_WEBPACK_PRE_COMPILED_SCHEMA_INVALID"
+				)();
+			}
+			/** @type {MultiCompiler|Compiler} */
+			let compiler;
+			/** @type {boolean | undefined} */
+			let watch = false;
+			/** @type {WatchOptions|WatchOptions[]} */
+			let watchOptions;
+			if (Array.isArray(options)) {
+				/** @type {MultiCompiler} */
+				compiler = createMultiCompiler(
+					options,
+					/** @type {MultiCompilerOptions} */ (options)
+				);
+				watch = options.some(options => options.watch);
+				watchOptions = options.map(options => options.watchOptions || {});
+			} else {
+				const webpackOptions = /** @type {WebpackOptions} */ (options);
+				/** @type {Compiler} */
+				compiler = createCompiler(webpackOptions);
+				watch = webpackOptions.watch;
+				watchOptions = webpackOptions.watchOptions || {};
+			}
+			return { compiler, watch, watchOptions };
+		};
+		if (callback) {
+			try {
+				const { compiler, watch, watchOptions } = create();
+				if (watch) {
+					compiler.watch(watchOptions, callback);
+				} else {
+					compiler.run((err, stats) => {
+						compiler.close(err2 => {
+							callback(
+								err || err2,
+								/** @type {options extends WebpackOptions ? Stats : MultiStats} */
+								(stats)
+							);
+						});
+					});
+				}
+				return compiler;
+			} catch (err) {
+				process.nextTick(() => callback(/** @type {Error} */ (err)));
+				return null;
+			}
+		} else {
+			const { compiler, watch } = create();
+			if (watch) {
+				util.deprecate(
+					() => {},
+					"A 'callback' argument needs to be provided to the 'webpack(options, callback)' function when the 'watch' option is set. There is no way to handle the 'watch' option without a callback.",
+					"DEP_WEBPACK_WATCH_WITHOUT_CALLBACK"
+				)();
+			}
+			return compiler;
+		}
+	}
+);
+
+module.exports = webpack;