chore: merge blocksuite source code (#9213)

blocksuite/framework/global/src/utils/crypto.ts

@@ -0,0 +1,12 @@
+import { toBase64 } from 'lib0/buffer.js';
+import { digest } from 'lib0/hash/sha256';
+
+export async function sha(input: ArrayBuffer): Promise<string> {
+  const hash =
+    crypto.subtle === undefined // crypto.subtle is not available without a secure context (HTTPS)
+      ? digest(new Uint8Array(input))
+      : await crypto.subtle.digest('SHA-256', input);
+
+  // faster conversion from ArrayBuffer to base64 in browser
+  return toBase64(new Uint8Array(hash)).replace(/\+/g, '-').replace(/\//g, '_');
+}