webpack/lib/container/ContainerPlugin.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra, Zackary Jackson @ScriptedAlchemy, Marais Rossouw @maraisr
*/

"use strict";

const { validate } = require("schema-utils");
const schema = require("../../schemas/plugins/container/ContainerPlugin.json");
const ContainerEntryDependency = require("./ContainerEntryDependency");
const ContainerEntryModuleFactory = require("./ContainerEntryModuleFactory");
const ContainerExposedDependency = require("./ContainerExposedDependency");
const { parseOptions } = require("./options");

/** @typedef {import("../../declarations/plugins/container/ContainerPlugin").ContainerPluginOptions} ContainerPluginOptions */
/** @typedef {import("../Compiler")} Compiler */

const PLUGIN_NAME = "ContainerPlugin";

class ContainerPlugin {
	/**
	 * @param {ContainerPluginOptions} options options
	 */
	constructor(options) {
		validate(schema, options, { name: "Container Plugin" });

		this._options = {
			name: options.name,
			shareScope: options.shareScope || "default",
			library: options.library || {
				type: "var",
				name: options.name
			},
			filename: options.filename || undefined,
			exposes: parseOptions(
				options.exposes,
				item => ({
					import: Array.isArray(item) ? item : [item]
				}),
				item => ({
					import: Array.isArray(item.import) ? item.import : [item.import]
				})
			)
		};
	}

	/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		const { name, exposes, shareScope, filename, library } = this._options;

		compiler.options.output.enabledLibraryTypes.push(library.type);

		compiler.hooks.make.tapAsync(PLUGIN_NAME, (compilation, callback) => {
			const dep = new ContainerEntryDependency(name, exposes, shareScope);
			dep.loc = { name };
			compilation.addEntry(
				compilation.options.context,
				dep,
				{
					name,
					filename,
					library
				},
				error => {
					if (error) return callback(error);
					callback();
				}
			);
		});

		compiler.hooks.thisCompilation.tap(
			PLUGIN_NAME,
			(compilation, { normalModuleFactory }) => {
				compilation.dependencyFactories.set(
					ContainerEntryDependency,
					new ContainerEntryModuleFactory()
				);

				compilation.dependencyFactories.set(
					ContainerExposedDependency,
					normalModuleFactory
				);
			}
		);
	}
}

module.exports = ContainerPlugin;