refactor: check for Node + Dart2JS.

Author: elliotwutingfeng

lib/src/platform_check/node_crypto.dart

@@ -3,6 +3,8 @@ library nodecrypto;
 
 import 'dart:js_interop';
 
+const bool isWASM = bool.fromEnvironment('dart.tool.dart2wasm');
+
 @JS()
 @staticInterop
 class Process {}
@@ -22,7 +24,7 @@ extension on Versions {
   external JSAny get node;
 }
 
-bool get isNodeJS => _process?.versions?.node != null;
+bool get isNodeDart2JS => _process?.versions?.node != null && !isWASM;
 
 @JS()
 @staticInterop

lib/src/platform_check/web.dart

@@ -10,7 +10,7 @@ import 'platform_check.dart';
 
 class PlatformWeb extends Platform {
   static final PlatformWeb instance = PlatformWeb();
-  static bool useBuiltInRng = !isNodeJS;
+  static bool useBuiltInRng = !isNodeDart2JS;
 
   const PlatformWeb();