TSUP configs

src/utils/generateSecret.ts

@@ -1,9 +1,50 @@
-import { randomBytes } from 'crypto';
 import { ethers } from 'ethers';
+class XorShift128Plus {
+  private x: number;
+  private y: number;
+
+  constructor(seed: number) {
+    this.x = seed;
+    this.y = seed ^ 0x6d2b79f5; // 0x6d2b79f5 is the golden ratio
+  }
+
+  public nextInt32(): number {
+    let x = this.x;
+    const y = this.y;
+
+    this.x = y;
+    x ^= x << 23;
+    x ^= x >> 17;
+    x ^= y ^ (y >> 26);
+
+    this.y = x;
+    return x + y;
+  }
+}
+
+function generateSeed(): number {
+  return Math.floor(Date.now() * Math.random());
+}
+
+function generateRandomBytes(size: number, rng: XorShift128Plus): Uint8Array {
+  const buffer = new Uint8Array(size);
+
+  for (let i = 0; i < size; i++) {
+    buffer[i] = rng.nextInt32() & 0xff;
+  }
+
+  return buffer;
+}
+
+function isomorphicCryptoRandomBytes(size: number): Uint8Array {
+  const seed = generateSeed();
+  const rng = new XorShift128Plus(seed);
+  return generateRandomBytes(size, rng);
+}
 
 const generateSecret = () => {
   const RANDOM_BITS = 256;
-  const rand = randomBytes(RANDOM_BITS);
+  const rand = isomorphicCryptoRandomBytes(RANDOM_BITS);
   const secret = ethers.utils.keccak256(rand);
   return secret;
 };