chore(aws_common): Add secure uuid flag

Author: Dillon Nys

packages/aws_common/lib/src/util/uuid.dart

@@ -15,11 +15,16 @@
 import 'package:uuid/uuid.dart';
 import 'package:uuid/uuid_util.dart';
 
-/// Generates a crypto-secure UUID (v4).
-String uuid() => const Uuid().v4(
-      // Use the crypto-secure RNG per `package:uuid` docs:
-      // https://github.com/Daegalus/dart-uuid/blob/d7bc930942afc752edd0fd15f8bf8234d81dfeda/example/example.dart#L21
-      options: const <String, Object>{
-        'rng': UuidUtil.cryptoRNG,
-      },
+/// Generates a UUID (v4).
+///
+/// If [secure] is `true`, uses a crypto-secure RNG at the cost of worse
+/// performance (5-100x, depending on the platform).
+String uuid({bool secure = false}) => const Uuid().v4(
+      options: !secure
+          ? null
+          // Use the crypto-secure RNG per `package:uuid` docs:
+          // https://github.com/Daegalus/dart-uuid/blob/d7bc930942afc752edd0fd15f8bf8234d81dfeda/example/example.dart#L21
+          : const <String, Object>{
+              'rng': UuidUtil.cryptoRNG,
+            },
     );