add hw2

node_modules/uuid/dist/esm/sha1.js

@@ -0,0 +1,11 @@
+import { createHash } from 'crypto';
+function sha1(bytes) {
+    if (Array.isArray(bytes)) {
+        bytes = Buffer.from(bytes);
+    }
+    else if (typeof bytes === 'string') {
+        bytes = Buffer.from(bytes, 'utf8');
+    }
+    return createHash('sha1').update(bytes).digest();
+}
+export default sha1;