webpack/lib/sharing/SharePlugin.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 and Zackary Jackson @ScriptedAlchemy
*/

"use strict";

const { parseOptions } = require("../container/options");
const ConsumeSharedPlugin = require("./ConsumeSharedPlugin");
const ProvideSharedPlugin = require("./ProvideSharedPlugin");
const { isRequiredVersion } = require("./utils");

/** @typedef {import("../../declarations/plugins/sharing/ConsumeSharedPlugin").ConsumeSharedPluginOptions} ConsumeSharedPluginOptions */
/** @typedef {import("../../declarations/plugins/sharing/ConsumeSharedPlugin").ConsumesConfig} ConsumesConfig */
/** @typedef {import("../../declarations/plugins/sharing/ProvideSharedPlugin").ProvideSharedPluginOptions} ProvideSharedPluginOptions */
/** @typedef {import("../../declarations/plugins/sharing/ProvideSharedPlugin").ProvidesConfig} ProvidesConfig */
/** @typedef {import("../../declarations/plugins/sharing/SharePlugin").SharePluginOptions} SharePluginOptions */
/** @typedef {import("../../declarations/plugins/sharing/SharePlugin").SharedConfig} SharedConfig */
/** @typedef {import("../Compiler")} Compiler */

class SharePlugin {
	/**
	 * @param {SharePluginOptions} options options
	 */
	constructor(options) {
		/** @type {[string, SharedConfig][]} */
		const sharedOptions = parseOptions(
			options.shared,
			(item, key) => {
				if (typeof item !== "string")
					throw new Error("Unexpected array in shared");
				/** @type {SharedConfig} */
				const config =
					item === key || !isRequiredVersion(item)
						? {
								import: item
						  }
						: {
								import: key,
								requiredVersion: item
						  };
				return config;
			},
			item => item
		);
		/** @type {Record<string, ConsumesConfig>[]} */
		const consumes = sharedOptions.map(([key, options]) => ({
			[key]: {
				import: options.import,
				shareKey: options.shareKey || key,
				shareScope: options.shareScope,
				requiredVersion: options.requiredVersion,
				strictVersion: options.strictVersion,
				singleton: options.singleton,
				packageName: options.packageName,
				eager: options.eager
			}
		}));
		/** @type {Record<string, ProvidesConfig>[]} */
		const provides = sharedOptions
			.filter(([, options]) => options.import !== false)
			.map(([key, options]) => ({
				[options.import || key]: {
					shareKey: options.shareKey || key,
					shareScope: options.shareScope,
					version: options.version,
					eager: options.eager
				}
			}));
		this._shareScope = options.shareScope;
		this._consumes = consumes;
		this._provides = provides;
	}

	/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		new ConsumeSharedPlugin({
			shareScope: this._shareScope,
			consumes: this._consumes
		}).apply(compiler);
		new ProvideSharedPlugin({
			shareScope: this._shareScope,
			provides: this._provides
		}).apply(compiler);
	}
}

module.exports = SharePlugin;