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[flutter_tools] Fix hot restart for WASM web builds#187898

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Markzipan:wasm-web-hr-fix
Jul 9, 2026
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[flutter_tools] Fix hot restart for WASM web builds#187898
auto-submit[bot] merged 6 commits into
flutter:masterfrom
Markzipan:wasm-web-hr-fix

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@Markzipan

@Markzipan Markzipan commented Jun 11, 2026

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The original issue (whose fix caused this regression) is still avoided since the _vmService getter is always guarded by isRunningDebug or supportsServiceProtocol, which are false for wasm builds.

Fixes #186445

Kudos to https://github.com/codebk1 for finding the fix!

@github-actions github-actions Bot added the tool Affects the "flutter" command-line tool. See also t: labels. label Jun 11, 2026

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Code Review

This pull request modifies the ResidentWebRunner to check if supportsServiceProtocol is true before handling a null connection result as a no-clients-available case. It also updates a test in resident_web_runner_test.dart to verify that the application reloaded successfully instead of asserting a no-client-connected message. There are no review comments, and I have no feedback to provide.

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LGTM

@mdebbar mdebbar added the CICD Run CI/CD label Jun 12, 2026
@github-actions github-actions Bot removed the CICD Run CI/CD label Jun 15, 2026
@bkonyi bkonyi added the CICD Run CI/CD label Jun 16, 2026
@kevmoo kevmoo added the autosubmit Merge PR when tree becomes green via auto submit App label Jul 8, 2026
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auto-submit Bot commented Jul 8, 2026

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autosubmit label was removed for flutter/flutter/187898, because The base commit of the PR is older than 7 days and can not be merged. Please merge the latest changes from the main into this branch and resubmit the PR.

@auto-submit auto-submit Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Jul 8, 2026
@flutter-dashboard flutter-dashboard Bot removed the CICD Run CI/CD label Jul 8, 2026
@kevmoo kevmoo added CICD Run CI/CD autosubmit Merge PR when tree becomes green via auto submit App labels Jul 8, 2026
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auto-submit Bot added this pull request to the merge queue Jul 9, 2026
Merged via the queue into flutter:master with commit a02ec19 Jul 9, 2026
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@flutter-dashboard flutter-dashboard Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Jul 9, 2026
@Markzipan
Markzipan deleted the wasm-web-hr-fix branch July 9, 2026 18:08
auto-submit Bot pushed a commit to flutter/packages that referenced this pull request Jul 10, 2026
…12169)

Manual roll Flutter from 91939cc4db78 to dc2a8703e12b (50 revisions)

Manual roll requested by [email protected]

flutter/flutter@91939cc...dc2a870

2026-07-09 [email protected] [ios,macos] Update swiftc.py flags to match swiftc (flutter/flutter#189174)
2026-07-09 [email protected] [AGP 9] Update Warn Version to AGP 9+ (flutter/flutter#189109)
2026-07-09 [email protected] Sync CHANGELOG.md from stable (flutter/flutter#189203)
2026-07-09 [email protected] [web] Roll Chrome to 145 (framework) (flutter/flutter#182861)
2026-07-09 [email protected] Roll Packages from 52d84d6 to 20928d5 (6 revisions) (flutter/flutter#189194)
2026-07-09 [email protected] [web] Avoid absolute positioning for base CanvasKit canvas (flutter/flutter#188337)
2026-07-09 [email protected] Roll Dart SDK from cdb7217e65aa to a11fb7ed40a5 (6 revisions) (flutter/flutter#189195)
2026-07-09 [email protected] Fix dereference of nullptr in the moved-to-rect signal in the Linux embedder (flutter/flutter#189152)
2026-07-09 [email protected] Fix data for design packages (flutter/flutter#189140)
2026-07-09 [email protected] Roll Skia from 7b42d1251d54 to ab3a7b98c94d (2 revisions) (flutter/flutter#189181)
2026-07-09 [email protected] Roll Skia from 05d9d214e0b7 to 7b42d1251d54 (2 revisions) (flutter/flutter#189175)
2026-07-09 [email protected] Roll Skia from 542c8bdd7f4f to 05d9d214e0b7 (4 revisions) (flutter/flutter#189169)
2026-07-09 [email protected] UberSDF rect handling for thin (line-like) rectangles (flutter/flutter#188821)
2026-07-09 [email protected] Roll Skia from dd572c07f63c to 542c8bdd7f4f (4 revisions) (flutter/flutter#189160)
2026-07-09 [email protected] [flutter_tools] Fix hot restart for WASM web builds (flutter/flutter#187898)
2026-07-08 [email protected] Split FlViewRenderer into OpenGL and software backends (flutter/flutter#188824)
2026-07-08 [email protected] Promote android_hardware_smoke_tests out of bringup in CI (flutter/flutter#189081)
2026-07-08 [email protected] Roll Skia from 8df24be66531 to dd572c07f63c (4 revisions) (flutter/flutter#189150)
2026-07-08 [email protected] Expose LinuxWindowRegistrar on _window_linux.dart in order to better support out of tree LinuxWindowingOwners (flutter/flutter#188917)
2026-07-08 [email protected] Roll pub packages (flutter/flutter#189149)
2026-07-08 [email protected] fix(ci): harden some workflows (flutter/flutter#189087)
2026-07-08 [email protected] Roll Skia from 51a62da33da0 to 8df24be66531 (1 revision) (flutter/flutter#189139)
2026-07-08 [email protected] Roll Dart SDK to Dart 3.13 beta3 (flutter/flutter#189122)
2026-07-08 [email protected] [flutter_tools] Don't crash on non-UTF-8 plugin pubspec.yaml (flutter/flutter#188976)
2026-07-08 [email protected] [flutter_tools] Watch transitive #include headers for FragmentProgram hot reload (flutter/flutter#187945)
2026-07-08 [email protected] Roll Skia from 040d9f55de00 to 51a62da33da0 (1 revision) (flutter/flutter#189135)
2026-07-08 [email protected] Roll Packages from 92525f5 to 52d84d6 (7 revisions) (flutter/flutter#189134)
2026-07-08 [email protected] [flutter_tools] Forcefully kill hung subprocesses 5 seconds after timeout (flutter/flutter#187178)
2026-07-08 [email protected] Expose the app's build name and number as compile-time constants (flutter/flutter#187935)
2026-07-08 [email protected] Roll Skia from 1ff92f879815 to 040d9f55de00 (1 revision) (flutter/flutter#189131)
2026-07-08 [email protected] Roll Skia from 6137414bef5c to 1ff92f879815 (6 revisions) (flutter/flutter#189126)
2026-07-08 [email protected] [test cross imports] More test/rendering + flutter_test/test fixes (flutter/flutter#188954)
2026-07-08 [email protected] engine: explain why each candidate build was skipped in Flutter web loader (flutter/flutter#186254)
2026-07-08 [email protected] vscode: add missing unicode.h (flutter/flutter#189102)
2026-07-08 [email protected] Roll Fuchsia Linux SDK from 7RjQJBW3m-3Jl-7jr... to QcRFUtvCw2EobfJ8s... (flutter/flutter#189104)
2026-07-08 [email protected] Roll Skia from 075fbe4778d9 to 6137414bef5c (10 revisions) (flutter/flutter#189106)
2026-07-08 [email protected] engine: warn on WASM load failure when not crossOriginIsolated (flutter/flutter#186252)
2026-07-08 [email protected] Roll Dart SDK from c9bccc09e733 to db2155f56bf3 (2 revisions) (flutter/flutter#189105)
2026-07-08 [email protected] [flutter_tools] Prevent interactive device selection in machine mode (flutter/flutter#188267)
2026-07-08 [email protected] [flutter_tools] Fix wireless ADB device discovery when serial contains spaces (flutter/flutter#187943)
2026-07-07 [email protected] [web] Fix grouped autofill on iOS Chrome (flutter/flutter#187459)
2026-07-07 [email protected] Fix TextSelectionOverlay crash when layout is degenerate (flutter/flutter#188672)
2026-07-07 [email protected] [flutter_tools] Provision Android NDK in the main Gradle invocation (flutter/flutter#186337)
2026-07-07 [email protected] Android_hardware_smoke_test: Migrate to AGP 9 (flutter/flutter#189082)
...
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[wasm] Recompile complete. No client connected.

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