mirror of https://github.com/webpack/webpack.git
59 lines
1.8 KiB
JavaScript
59 lines
1.8 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const InitFragment = require("../InitFragment");
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const NullDependency = require("./NullDependency");
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/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
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/** @typedef {import("../Dependency")} Dependency */
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/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
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/** @typedef {import("../Module")} Module */
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class HarmonyCompatibilityDependency extends NullDependency {
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get type() {
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return "harmony export header";
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}
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}
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HarmonyCompatibilityDependency.Template = class HarmonyExportDependencyTemplate extends NullDependency.Template {
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {ReplaceSource} source the current replace source which can be modified
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* @param {DependencyTemplateContext} templateContext the context object
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* @returns {void}
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*/
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apply(dependency, source, templateContext) {
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// no-op
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}
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/**
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* @param {Dependency} dependency the dependency for which the template should be applied
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* @param {DependencyTemplateContext} templateContext the template context
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* @returns {InitFragment[]|null} the init fragments
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*/
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getInitFragments(dependency, { module, runtimeTemplate, moduleGraph }) {
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const usedExports = moduleGraph.getUsedExports(module);
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if (usedExports === true || usedExports === null) {
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const content = runtimeTemplate.defineEsModuleFlagStatement({
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exportsArgument: module.exportsArgument
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});
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return [
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new InitFragment(
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content,
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InitFragment.STAGE_HARMONY_EXPORTS,
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0,
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"harmony compatibility"
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)
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];
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} else {
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return null;
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}
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}
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};
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module.exports = HarmonyCompatibilityDependency;
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