44 lines
1.4 KiB
JavaScript
44 lines
1.4 KiB
JavaScript
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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// This webpack plugin lets us interpolate custom variables into `index.html`.
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// Usage: `new InterpolateHtmlPlugin(HtmlWebpackPlugin, { 'MY_VARIABLE': 42 })`
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// Then, you can use %MY_VARIABLE% in your `index.html`.
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// It works in tandem with HtmlWebpackPlugin.
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// Learn more about creating plugins like this:
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// https://github.com/ampedandwired/html-webpack-plugin#events
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'use strict';
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const escapeStringRegexp = require('escape-string-regexp');
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class InterpolateHtmlPlugin {
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constructor(htmlWebpackPlugin, replacements) {
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this.htmlWebpackPlugin = htmlWebpackPlugin;
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this.replacements = replacements;
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}
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apply(compiler) {
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compiler.hooks.compilation.tap('InterpolateHtmlPlugin', compilation => {
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this.htmlWebpackPlugin
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.getHooks(compilation)
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.afterTemplateExecution.tap('InterpolateHtmlPlugin', data => {
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// Run HTML through a series of user-specified string replacements.
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Object.keys(this.replacements).forEach(key => {
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const value = this.replacements[key];
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data.html = data.html.replace(
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new RegExp('%' + escapeStringRegexp(key) + '%', 'g'),
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value
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);
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});
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});
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});
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}
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}
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module.exports = InterpolateHtmlPlugin;
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