@expo/webpack-config
Version:
A Webpack configuration used to bundle Expo websites with Expo CLI.
54 lines • 2.31 kB
JavaScript
;
/**
* Copyright (c) 2022 Expo, Inc.
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* Based on https://github.com/facebook/create-react-app/blob/a422bf2/packages/react-dev-utils/evalSourceMapMiddleware.js
* But with Node LTS support.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.createEvalSourceMapMiddleware = void 0;
function base64SourceMap(source) {
const base64 = Buffer.from(JSON.stringify(source.map()), 'utf8').toString('base64');
return `data:application/json;charset=utf-8;base64,${base64}`;
}
function getSourceById(server, id) {
const module = Array.from(server._stats.compilation.modules).find(m => server._stats.compilation.chunkGraph.getModuleId(m) === id);
// @ts-ignore
return module.originalSource();
}
/*
* Middleware responsible for retrieving a generated source
* Receives a webpack internal url: "webpack-internal:///<module-id>"
* Returns a generated source: "<source-text><sourceMappingURL><sourceURL>"
*
* Based on EvalSourceMapDevToolModuleTemplatePlugin.js
*/
function createEvalSourceMapMiddleware(server) {
return function handleWebpackInternalMiddleware(req, res, next) {
var _a;
if (req.url.startsWith('/__get-internal-source')) {
const fileName = req.query.fileName;
if (typeof fileName !== 'string') {
return next();
}
const id = (_a = fileName === null || fileName === void 0 ? void 0 : fileName.match(/webpack-internal:\/\/\/(.+)/)) === null || _a === void 0 ? void 0 : _a[1];
// @ts-ignore: untyped
if (!id || !server._stats) {
return next();
}
const source = getSourceById(server, id);
const sourceMapURL = `//# sourceMappingURL=${base64SourceMap(source)}`;
const sourceURL = `//# sourceURL=webpack-internal:///${module.id}`;
res.end(`${source.source()}\n${sourceMapURL}\n${sourceURL}`);
}
else {
return next();
}
};
}
exports.createEvalSourceMapMiddleware = createEvalSourceMapMiddleware;
//# sourceMappingURL=evalSourceMapMiddleware.js.map