mirror of https://github.com/jkjoy/sunpeiwen.git
41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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*/
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"use strict";
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const RuntimeGlobals = require("../RuntimeGlobals");
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const Template = require("../Template");
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const HelperRuntimeModule = require("./HelperRuntimeModule");
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/** @typedef {import("../Compilation")} Compilation */
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class CompatGetDefaultExportRuntimeModule extends HelperRuntimeModule {
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constructor() {
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super("compat get default export");
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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const compilation = /** @type {Compilation} */ (this.compilation);
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const { runtimeTemplate } = compilation;
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const fn = RuntimeGlobals.compatGetDefaultExport;
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return Template.asString([
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"// getDefaultExport function for compatibility with non-harmony modules",
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`${fn} = ${runtimeTemplate.basicFunction("module", [
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"var getter = module && module.__esModule ?",
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Template.indent([
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`${runtimeTemplate.returningFunction("module['default']")} :`,
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`${runtimeTemplate.returningFunction("module")};`
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]),
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`${RuntimeGlobals.definePropertyGetters}(getter, { a: getter });`,
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"return getter;"
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])};`
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]);
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}
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}
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module.exports = CompatGetDefaultExportRuntimeModule;
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