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45 lines
1.5 KiB
45 lines
1.5 KiB
/**
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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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'use strict';
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function base64SourceMap(source) {
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const base64 = Buffer.from(JSON.stringify(source.map()), 'utf8').toString(
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'base64'
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);
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return `data:application/json;charset=utf-8;base64,${base64}`;
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}
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function getSourceById(server, id) {
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const module = server._stats.compilation.modules.find(m => m.id == id);
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return module.originalSource();
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}
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/*
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* Middleware responsible for retrieving a generated source
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* Receives a webpack internal url: "webpack-internal:///<module-id>"
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* Returns a generated source: "<source-text><sourceMappingURL><sourceURL>"
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*
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* Based on EvalSourceMapDevToolModuleTemplatePlugin.js
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*/
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module.exports = function createEvalSourceMapMiddleware(server) {
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return function handleWebpackInternalMiddleware(req, res, next) {
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if (req.url.startsWith('/__get-internal-source')) {
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const fileName = req.query.fileName;
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const id = fileName.match(/webpack-internal:\/\/\/(.+)/)[1];
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if (!id || !server._stats) {
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next();
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}
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const source = getSourceById(server, id);
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const sourceMapURL = `//# sourceMappingURL=${base64SourceMap(source)}`;
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const sourceURL = `//# sourceURL=webpack-internal:///${module.id}`;
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res.end(`${source.source()}\n${sourceMapURL}\n${sourceURL}`);
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} else {
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next();
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}
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};
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};
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