[WASM] Failed to check runtimeType in release mode

[hnvn]

This code line won't work on release mode for Flutter WASM:

socket_io_common/lib/src/engine/parser/decodePacket.dart

Line 20 in 25db984

if (encodedPacket.runtimeType.toString() == 'JSValue') {

[jumperchen]

Perhaps we need to have this API ready first. - dart-lang/sdk#56905

[jumperchen]

@hnvn Could you apply with the following diff into your runtime project to see if it works in release mode?

diff --git a/lib/src/engine/parser/decodePacket.dart b/lib/src/engine/parser/decodePacket.dart
index 0fd85b0..672410f 100644
--- a/lib/src/engine/parser/decodePacket.dart
+++ b/lib/src/engine/parser/decodePacket.dart
@@ -4,7 +4,7 @@
 
 import 'dart:convert';
 import 'dart:typed_data';
-
+import 'dart:js_interop';
 import 'commons.dart';
 
 mapBinary(data, binaryType) {
@@ -17,7 +17,7 @@ mapBinary(data, binaryType) {
 
 decodePacket(dynamic encodedPacket, binaryType) {
   // a workaround for Flutter web WASM
-  if (encodedPacket.runtimeType.toString() == 'JSValue') {
+  if (encodedPacket is JSString) {
     encodedPacket = '$encodedPacket'; // force to String type in dart
   }
   if (encodedPacket is! String) {

[hnvn]

@jumperchen This solution works well in release mode for Flutter Web WASM, but it causes build error in other platforms:

Error (Xcode): ../../../.pub-cache/git/socket_io_common-2d37d94cc491c9ef943f434c4effc7a712eaf81b/lib/src/engine/parser/decodePacket.dart:6:8: Error: Dart library 'dart:js_interop' is not available on this platform.