mirror of https://github.com/webpack/webpack.git
54 lines
1.3 KiB
JavaScript
54 lines
1.3 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 { ConcatSource } = require("webpack-sources");
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/** @typedef {import("./Compilation")} Compilation */
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/**
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* @param {string[]} accessor the accessor to convert to path
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* @returns {string} the path
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*/
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const accessorToObjectAccess = accessor => {
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return accessor.map(a => `[${JSON.stringify(a)}]`).join("");
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};
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class ExportPropertyMainTemplatePlugin {
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/**
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* @param {string|string[]} property the name of the property to export
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*/
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constructor(property) {
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this.property = property;
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}
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/**
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* @param {Compilation} compilation the compilation instance
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* @returns {void}
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*/
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apply(compilation) {
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const { mainTemplate, chunkTemplate } = compilation;
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const onRenderWithEntry = (source, chunk, hash) => {
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const postfix = `${accessorToObjectAccess([].concat(this.property))}`;
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return new ConcatSource(source, postfix);
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};
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for (const template of [mainTemplate, chunkTemplate]) {
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template.hooks.renderWithEntry.tap(
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"ExportPropertyMainTemplatePlugin",
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onRenderWithEntry
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);
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}
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mainTemplate.hooks.hash.tap("ExportPropertyMainTemplatePlugin", hash => {
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hash.update("export property");
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hash.update(`${this.property}`);
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});
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}
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}
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module.exports = ExportPropertyMainTemplatePlugin;
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