source: frontend/node_modules/webpack/lib/runtime/MakeNamespaceObjectRuntimeModule.js

/*
        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");
        }

        /**
         * Generates runtime code for this runtime module.
         * @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;