When implementing flutter/flutter#126302, and in many other scenarios, it is common that I want to output the class name. If I simply do thatObject.runtimeType.toString(), after obfuscation, it will become a "random" string. So the question is, how can I print a representation of a class, such that I can still know what it is after obfuscation (probably with demangling)?

Naive thoughts:

1. Is it possible to demangle the obfuscated class name currently, just like demangling the stack traces nowadays?
2. Or, can we create a brand new representation, say, "thatObject.runtimeType.getRepresentationId()", and have a table to know which "representation id" is equivalent to which class? (IIRC dart type representation already has a integer id; but this "representation id" may or may not be the same as that)

EDIT: Corresponding discussions in Discord - https://discord.com/channels/608014603317936148/608022273152122881/1105304953829986424

EDIT: Simple demo

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    final message = 'MyApp=$MyApp Scaffold=$Scaffold';
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(),
        body: TextButton(
          onPressed: () => throw Exception(message),
          child: Text('throw Exception($message)'),
        ),
      ),
    );
  }
}

Run it:

bug flutter build apk --obfuscate --split-debug-info=whatever-path

The message looks like MyApp=xo Scaffold=ex. The proposal of this issue is that, by using debug symbols (or whatever), try to convert xo to MyApp and ex to Scaffold.

Naive attempt using flutter symbolize:

(base) ➜  bug flutter symbolize -d ./build/split-debug-info/app.android-arm.symbols
xo
xo
ex
ex
^C%