webpack/lib/EntryOptionPlugin.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
*/

"use strict";

/** @typedef {import("../declarations/WebpackOptions").EntryDescriptionNormalized} EntryDescription */
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./Entrypoint").EntryOptions} EntryOptions */

class EntryOptionPlugin {
	/**
	 * @param {Compiler} compiler the compiler instance one is tapping into
	 * @returns {void}
	 */
	apply(compiler) {
		compiler.hooks.entryOption.tap("EntryOptionPlugin", (context, entry) => {
			if (typeof entry === "function") {
				const DynamicEntryPlugin = require("./DynamicEntryPlugin");
				new DynamicEntryPlugin(context, entry).apply(compiler);
			} else {
				const EntryPlugin = require("./EntryPlugin");
				for (const name of Object.keys(entry)) {
					const desc = entry[name];
					const options = EntryOptionPlugin.entryDescriptionToOptions(
						compiler,
						name,
						desc
					);
					for (const entry of desc.import) {
						new EntryPlugin(context, entry, options).apply(compiler);
					}
				}
			}
			return true;
		});
	}

	/**
	 * @param {Compiler} compiler the compiler
	 * @param {string} name entry name
	 * @param {EntryDescription} desc entry description
	 * @returns {EntryOptions} options for the entry
	 */
	static entryDescriptionToOptions(compiler, name, desc) {
		/** @type {EntryOptions} */
		const options = {
			name,
			filename: desc.filename,
			runtime: desc.runtime,
			dependOn: desc.dependOn,
			chunkLoading: desc.chunkLoading,
			wasmLoading: desc.wasmLoading,
			library: desc.library
		};
		if (desc.chunkLoading) {
			const EnableChunkLoadingPlugin = require("./javascript/EnableChunkLoadingPlugin");
			EnableChunkLoadingPlugin.checkEnabled(compiler, desc.chunkLoading);
		}
		if (desc.wasmLoading) {
			const EnableWasmLoadingPlugin = require("./wasm/EnableWasmLoadingPlugin");
			EnableWasmLoadingPlugin.checkEnabled(compiler, desc.wasmLoading);
		}
		if (desc.library) {
			const EnableLibraryPlugin = require("./library/EnableLibraryPlugin");
			EnableLibraryPlugin.checkEnabled(compiler, desc.library.type);
		}
		return options;
	}
}

module.exports = EntryOptionPlugin;