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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("./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=} 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 => createCompiler(options));
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
* @returns {Compiler} a compiler
*/
const createCompiler = rawOptions => {
const options = getNormalizedWebpackOptions(rawOptions);
applyWebpackOptionsBaseDefaults(options);
const compiler = new Compiler(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") {
plugin.call(compiler, compiler);
} else {
plugin.apply(compiler);
}
}
}
applyWebpackOptionsDefaults(options);
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
*/
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}
*/
(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;
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, stats);
});
});
}
return compiler;
} catch (err) {
process.nextTick(() => callback(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;