refactor: separate elements logic into a standalone package (#9285)

packages/common/src/random.ts

@@ -0,0 +1,16 @@
+import { nanoid } from "nanoid";
+import { Random } from "roughjs/bin/math";
+
+import { isTestEnv } from "./utils";
+
+let random = new Random(Date.now());
+let testIdBase = 0;
+
+export const randomInteger = () => Math.floor(random.next() * 2 ** 31);
+
+export const reseed = (seed: number) => {
+  random = new Random(seed);
+  testIdBase = 0;
+};
+
+export const randomId = () => (isTestEnv() ? `id${testIdBase++}` : nanoid());