snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

packages/random/src/BrowserRandomGenerator.ts

@@ -0,0 +1,23 @@
+import { AleaRandomGenerator } from './AleaRandomGenerator';
+import { RandomGenerator } from './RandomGenerator';
+import { createAleaGeneratorWithGeneratedSeed } from './createAleaGenerator';
+
+// cryptographically strong PRNGs available in modern browsers
+export class BrowserRandomGenerator extends RandomGenerator {
+	/**
+	 * @name Random.fraction
+	 * @summary Return a number between 0 and 1, like `Math.random`.
+	 * @locus Anywhere
+	 */
+	fraction() {
+		const array = new Uint32Array(1);
+		window.crypto.getRandomValues(array);
+		return array[0] * 2.3283064365386963e-10; // 2^-32
+	}
+
+	protected safelyCreateWithSeeds(...seeds: readonly unknown[]) {
+		return new AleaRandomGenerator({ seeds });
+	}
+
+	insecure: RandomGenerator = createAleaGeneratorWithGeneratedSeed();
+}