1 files changed, 15 insertions, 0 deletions
diff --git a/packages/excalidraw/random.ts b/packages/excalidraw/random.ts
new file mode 100644
index 0000000..851bc28
--- /dev/null
+++ b/packages/excalidraw/random.ts
@@ -0,0 +1,15 @@
+import { Random } from "roughjs/bin/math";
+import { nanoid } from "nanoid";
+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());