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Support debug mode for WASM builds #148850

@Rexios80

Description

@Rexios80

Steps to reproduce

  1. Create a new project
  2. Call print(kDebugMode)
  3. Run flutter run --debug -d chrome --wasm
  4. It prints false

Expected results

It prints true

Actual results

It prints false

Code sample

Code sample
import 'package:flutter/foundation.dart';

void main() {
  print(kDebugMode);
}

Screenshots or Video

Screenshots / Video demonstration

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Logs

Logs
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Flutter Doctor output

Doctor output
rexios@Aarons-MBP pub_stats % flutter doctor -v
[✓] Flutter (Channel main, 3.22.0-42.0.pre.6, on macOS 14.5 23F79 darwin-arm64, locale en-US)
    • Flutter version 3.22.0-42.0.pre.6 on channel main at /Users/rexios/repos/flutter
    • Upstream repository [email protected]:flutter/flutter.git
    • Framework revision 112e8b5509 (4 hours ago), 2024-05-22 09:25:21 +0200
    • Engine revision c89defa558
    • Dart version 3.5.0 (build 3.5.0-177.0.dev)
    • DevTools version 2.36.0-dev.10

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/rexios/Library/Android/sdk
    • Platform android-34, build-tools 34.0.0
    • Java binary at: /Applications/Android Studio Preview.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11609105)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15F31d
    • CocoaPods version 1.15.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (version unknown)
    • Android Studio at /Applications/Android Studio Preview.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    ✗ Unable to determine Android Studio version.
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11609105)

[✓] VS Code (version 1.89.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.88.0

[✓] Connected device (4 available)
    • Aaron’s iPhone (mobile)         • 00008130-001C35CE3A20001C • ios            • iOS 17.5.1 21F90
    • macOS (desktop)                 • macos                     • darwin-arm64   • macOS 14.5 23F79 darwin-arm64
    • Mac Designed for iPad (desktop) • mac-designed-for-ipad     • darwin         • macOS 14.5 23F79 darwin-arm64
    • Chrome (web)                    • chrome                    • web-javascript • Google Chrome 124.0.6367.208

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 1 category.

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    P2Important issues not at the top of the work liste: wasmIssues related to the wasm build of Flutter Web.found in release: 3.22Found to occur in 3.22has reproducible stepsThe issue has been confirmed reproducible and is ready to work onplatform-webWeb applications specificallyr: fixedIssue is closed as already fixed in a newer versionteam-webOwned by Web platform teamtriaged-webTriaged by Web platform team

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