mirror of https://github.com/webpack/webpack.git
42 lines
1.2 KiB
JavaScript
42 lines
1.2 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").ConcatSource;
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class SetVarMainTemplatePlugin {
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constructor(varExpression, copyObject) {
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this.varExpression = varExpression;
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this.copyObject = copyObject;
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}
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apply(compilation) {
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const mainTemplate = compilation.mainTemplate;
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compilation.templatesPlugin("render-with-entry", (source, chunk, hash) => {
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const varExpression = mainTemplate.applyPluginsWaterfall("asset-path", this.varExpression, {
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hash,
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chunk
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});
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if(this.copyObject) {
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return new ConcatSource(`(function(e, a) { for(var i in a) e[i] = a[i]; }(${varExpression}, `, source, "))");
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} else {
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const prefix = `${varExpression} =\n`;
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return new ConcatSource(prefix, source);
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}
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});
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mainTemplate.plugin("global-hash-paths", (paths) => {
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if(this.varExpression) paths.push(this.varExpression);
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return paths;
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});
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mainTemplate.plugin("hash", hash => {
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hash.update("set var");
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hash.update(`${this.varExpression}`);
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hash.update(`${this.copyObject}`);
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});
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}
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}
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module.exports = SetVarMainTemplatePlugin;
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