expo-router
Version:
Expo Router is a file-based router for React Native and web applications.
105 lines • 3.73 kB
JavaScript
;
/**
* Copyright © 2024 650 Industries.
* Copyright © 2024 2023 Daishi Kato
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.unstable_headers = exports.getContext = exports.rerender = exports.runWithRenderStore = exports.defineEntries = exports.REQUEST_HEADERS = void 0;
exports.REQUEST_HEADERS = '__expo_requestHeaders';
function defineEntries(renderEntries, getBuildConfig, getSsrConfig) {
return { renderEntries, getBuildConfig, getSsrConfig };
}
exports.defineEntries = defineEntries;
// TODO(EvanBacon): This can leak between platforms and runs.
// We need to share this module between the server action module and the renderer module, per platform, and invalidate on refreshes.
function getGlobalCacheForPlatform() {
if (!globalThis.__EXPO_RSC_CACHE__) {
globalThis.__EXPO_RSC_CACHE__ = new Map();
}
if (globalThis.__EXPO_RSC_CACHE__.has(process.env.EXPO_OS)) {
return globalThis.__EXPO_RSC_CACHE__.get(process.env.EXPO_OS);
}
try {
const { AsyncLocalStorage } = require('node:async_hooks');
// @ts-expect-error: This is a Node.js feature.
const serverCache = new AsyncLocalStorage();
globalThis.__EXPO_RSC_CACHE__.set(process.env.EXPO_OS, serverCache);
return serverCache;
}
catch (error) {
console.log('[RSC]: Failed to create cache:', error);
// Fallback to a simple in-memory cache.
const cache = new Map();
const serverCache = {
getStore: () => cache.get('store'),
run: (store, fn) => {
cache.set('store', store);
try {
return fn();
}
finally {
cache.delete('store');
}
},
};
globalThis.__EXPO_RSC_CACHE__.set(process.env.EXPO_OS, serverCache);
return serverCache;
}
}
let previousRenderStore;
let currentRenderStore;
const renderStorage = getGlobalCacheForPlatform();
/**
* This is an internal function and not for public use.
*/
const runWithRenderStore = (renderStore, fn) => {
if (renderStorage) {
return renderStorage.run(renderStore, fn);
}
previousRenderStore = currentRenderStore;
currentRenderStore = renderStore;
try {
return fn();
}
finally {
currentRenderStore = previousRenderStore;
}
};
exports.runWithRenderStore = runWithRenderStore;
function rerender(input, params) {
const renderStore = renderStorage?.getStore() ?? currentRenderStore;
if (!renderStore) {
throw new Error('Render store is not available');
}
renderStore.rerender(input, params);
}
exports.rerender = rerender;
function getContext() {
const renderStore = renderStorage?.getStore() ?? currentRenderStore;
if (!renderStore) {
throw new Error('Render store is not available');
}
return renderStore.context;
}
exports.getContext = getContext;
/** Get the request headers used to make the server component or action request. */
async function unstable_headers() {
const headers = (getContext()[exports.REQUEST_HEADERS] || {});
return new ReadonlyHeaders(headers);
}
exports.unstable_headers = unstable_headers;
class ReadonlyHeaders extends Headers {
set() {
throw new Error('Server component Headers are read-only');
}
append() {
throw new Error('Server component Headers are read-only');
}
delete() {
throw new Error('Server component Headers are read-only');
}
}
//# sourceMappingURL=server.js.map