source: frontend/node_modules/webpack/lib/runtime/CompatGetDefaultExportRuntimeModule.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 CompatGetDefaultExportRuntimeModule extends HelperRuntimeModule {
        constructor() {
                super("compat get default export");
        }

        /**
         * 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.compatGetDefaultExport;
                return Template.asString([
                        "// getDefaultExport function for compatibility with non-harmony modules",
                        `${fn} = ${runtimeTemplate.basicFunction("module", [
                                "var getter = module && module.__esModule ?",
                                Template.indent([
                                        `${runtimeTemplate.returningFunction("module['default']")} :`,
                                        `${runtimeTemplate.returningFunction("module")};`
                                ]),
                                `${RuntimeGlobals.definePropertyGetters}(getter, { a: getter });`,
                                "return getter;"
                        ])};`
                ]);
        }
}

module.exports = CompatGetDefaultExportRuntimeModule;