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packages/react-native/Libraries/Core/Devtools/getDevServer.js
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Tim Yung
RN: Sort Pragmas in Headers (#51554)
23 май 2025, 07:18
23 май 2025, 07:18
1977dd6
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/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow strict * @format */ import NativeSourceCode from '../../NativeModules/specs/NativeSourceCode'; let _cachedDevServerURL: ?string; let _cachedFullBundleURL: ?string; const FALLBACK = 'http://localhost:8081/'; type DevServerInfo = { url: string, fullBundleUrl: ?string, bundleLoadedFromServer: boolean, ... }; /** * Many RN development tools rely on the development server (packager) running * @return URL to packager with trailing slash */ export default function getDevServer(): DevServerInfo { if (_cachedDevServerURL === undefined) { const scriptUrl = NativeSourceCode.getConstants().scriptURL; const match = scriptUrl.match(/^https?:\/\/.*?\//); _cachedDevServerURL = match ? match[0] : null; _cachedFullBundleURL = match ? scriptUrl : null; } return { url: _cachedDevServerURL ?? FALLBACK, fullBundleUrl: _cachedFullBundleURL, bundleLoadedFromServer: _cachedDevServerURL !== null, }; }