Add React Native support to the Typescript SDK (#2955)

This PR helps to support React Native in the Typescript SDK. We have
identified two issues:

1. Certain versions of React Native exhibit a bug where the constructor
mistakenly treats a URL object as a string. This causes an error when
the constructor attempts to call `.endsWith()` on the URL object,
leading to runtime errors. This PR adds a .toString() call when passing
a URL instance to the URL constructor.
2. React Native doesn't provide an implementation for TextEncoder and
TextDecoder which are used to read/write strings in our binary reader
and writer. This PR use introduce the usage of a library for these two
types.

Note: this still requires the use of a Polyfill as React Native URL
implementation is missing most methods in version older than 0.79 (>= 6
month old)

Author: JulienLavocat

sdks/typescript/packages/sdk/package.json

@@ -47,6 +47,7 @@
     "undici": "^6.19.2"
   },
   "dependencies": {
+    "@zxing/text-encoding": "^0.9.0",
     "base64-js": "^1.5.1"
   }
 }

sdks/typescript/packages/sdk/src/binary_reader.ts

@@ -1,3 +1,5 @@
+import { TextDecoder } from '@zxing/text-encoding';
+
 export default class BinaryReader {
   #buffer: DataView;
   #offset: number = 0;

sdks/typescript/packages/sdk/src/binary_writer.ts

@@ -1,4 +1,5 @@
 import { fromByteArray } from 'base64-js';
+import { TextEncoder } from '@zxing/text-encoding';
 
 export default class BinaryWriter {
   #buffer: Uint8Array;

sdks/typescript/packages/sdk/src/db_connection_impl.ts

@@ -202,7 +202,10 @@ export class DbConnectionImpl<
   }: DbConnectionConfig) {
     stdbLogger('info', 'Connecting to SpacetimeDB WS...');
 
-    let url = new URL(uri);
+    // We use .toString() here because some versions of React Native contain a bug where the URL constructor
+    // incorrectly treats a URL instance as a plain string.
+    // This results in an attempt to call .endsWith() on it, leading to an error.
+    let url = new URL(uri.toString());
     if (!/^wss?:/.test(uri.protocol)) {
       url.protocol = url.protocol === 'https:' ? 'wss:' : 'ws:';
     }