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47 lines
1.5 KiB
47 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 = Array.from(server._stats.compilation.modules).find( |
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(m) => server._stats.compilation.chunkGraph.getModuleId(m) == id, |
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); |
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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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