package.lib.runtime.MakeNamespaceObjectRuntimeModule.js Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of webpack Show documentation

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

The newest version!

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const Template = require("../Template");
const HelperRuntimeModule = require("./HelperRuntimeModule");

/** @typedef {import("../Compilation")} Compilation */

class MakeNamespaceObjectRuntimeModule extends HelperRuntimeModule {
	constructor() {
		super("make namespace object");
	}

	/**
	 * @returns {string | null} runtime code
	 */
	generate() {
		const compilation = /** @type {Compilation} */ (this.compilation);
		const { runtimeTemplate } = compilation;
		const fn = RuntimeGlobals.makeNamespaceObject;
		return Template.asString([
			"// define __esModule on exports",
			`${fn} = ${runtimeTemplate.basicFunction("exports", [
				"if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {",
				Template.indent([
					"Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });"
				]),
				"}",
				"Object.defineProperty(exports, '__esModule', { value: true });"
			])};`
		]);
	}
}

module.exports = MakeNamespaceObjectRuntimeModule;