A React Native app for the ultimate thinking partner.
cameron.stream
1/**
2 * Polyfills for React Native to support Web Streams API and Crypto
3 * Required for Letta SDK streaming functionality
4 */
5
6// IMPORTANT: Import crypto polyfill FIRST before anything else
7// This provides secure random number generation required by many libraries
8import 'react-native-get-random-values';
9
10// Manually polyfill web streams instead of using react-native-polyfill-globals/auto
11// which has compatibility issues with newer web-streams-polyfill versions
12if (typeof global !== 'undefined') {
13 // Load web-streams-polyfill
14 const webStreams = require('web-streams-polyfill');
15
16 // Always override to ensure consistency across platforms
17 global.ReadableStream = webStreams.ReadableStream;
18 global.WritableStream = webStreams.WritableStream;
19 global.TransformStream = webStreams.TransformStream;
20
21 // Polyfill TextEncoder/TextDecoder
22 if (!global.TextEncoder || !global.TextDecoder) {
23 const encoding = require('text-encoding');
24 global.TextEncoder = encoding.TextEncoder;
25 global.TextDecoder = encoding.TextDecoder;
26 }
27
28 // Polyfill fetch if needed (usually provided by React Native)
29 if (!global.fetch) {
30 console.warn('[Polyfill] fetch not available - some features may not work');
31 }
32
33 // Polyfill URL and URLSearchParams if needed
34 if (!global.URL) {
35 try {
36 const { URL, URLSearchParams } = require('react-native-url-polyfill');
37 global.URL = URL;
38 global.URLSearchParams = URLSearchParams;
39 } catch (e) {
40 console.warn('[Polyfill] URL polyfill not available:', e.message);
41 }
42 }
43
44 console.log('[Polyfill] Web Streams API polyfill loaded');
45 console.log('[Polyfill] ReadableStream:', typeof global.ReadableStream);
46 console.log('[Polyfill] WritableStream:', typeof global.WritableStream);
47 console.log('[Polyfill] TransformStream:', typeof global.TransformStream);
48 console.log('[Polyfill] TextEncoder:', typeof global.TextEncoder);
49 console.log('[Polyfill] TextDecoder:', typeof global.TextDecoder);
50}