[ Widget Preview ] Don't try to instantiate invalid @Preview() applications
#173984
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…ications Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: #173959 Related stable hotfix: #173979
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This pull request enhances the robustness of widget preview detection by adding checks to ignore invalid @Preview() applications, preventing exceptions from invalid generated code. The changes are logical and well-tested. I've added a couple of suggestions to further improve the resilience of the AST parsing by handling nullable return types and unexpected type annotations more safely, which aligns with the goal of this PR.
packages/flutter_tools/lib/src/widget_preview/dependency_graph.dart
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matanlurey
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Aug 18, 2025
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autosubmit label was removed for flutter/flutter/173984, because - The status or check suite Mac tool_integration_tests_4_5 has failed. Please fix the issues identified (or deflake) before re-applying this label. |
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flutter/flutter@2265d94...e65380a 2025-08-19 [email protected] Roll Dart SDK from 502455ee300b to 9105d946af95 (3 revisions) (flutter/flutter#174002) 2025-08-18 [email protected] Add `open_jdk` to `Linux analyze` (flutter/flutter#173988) 2025-08-18 [email protected] Add "team-ios" label to iOS team triage query (flutter/flutter#173997) 2025-08-18 [email protected] Migrate deeplink json creation to public AGP api (flutter/flutter#173794) 2025-08-18 [email protected] [ Widget Preview ] Don't crash when directory watcher restarts on Windows (flutter/flutter#173987) 2025-08-18 [email protected] [ Widget Preview ] Don't try to instantiate invalid `@Preview()` applications (flutter/flutter#173984) 2025-08-18 [email protected] Explain how to run Google Test tests directly (flutter/flutter#173978) 2025-08-18 [email protected] [flutter_tools] Use DWDS 25.0.1 (flutter/flutter#173777) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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…#9850) flutter/flutter@2265d94...e65380a 2025-08-19 [email protected] Roll Dart SDK from 502455ee300b to 9105d946af95 (3 revisions) (flutter/flutter#174002) 2025-08-18 [email protected] Add `open_jdk` to `Linux analyze` (flutter/flutter#173988) 2025-08-18 [email protected] Add "team-ios" label to iOS team triage query (flutter/flutter#173997) 2025-08-18 [email protected] Migrate deeplink json creation to public AGP api (flutter/flutter#173794) 2025-08-18 [email protected] [ Widget Preview ] Don't crash when directory watcher restarts on Windows (flutter/flutter#173987) 2025-08-18 [email protected] [ Widget Preview ] Don't try to instantiate invalid `@Preview()` applications (flutter/flutter#173984) 2025-08-18 [email protected] Explain how to run Google Test tests directly (flutter/flutter#173978) 2025-08-18 [email protected] [flutter_tools] Use DWDS 25.0.1 (flutter/flutter#173777) If this roll has caused a breakage, revert this CL and stop the roller using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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…ications (flutter#173984) Applying `@Preview()` to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code. This change adds some additional checks to ensure that invalid `@Preview()` applications are ignored. Related issue: flutter#173959 Related stable hotfix: flutter#173979
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Applying
@Preview()to an invalid AST node shouldn't cause the preview environment to throw an exception due to invalid generated code.This change adds some additional checks to ensure that invalid
@Preview()applications are ignored.Related issue: #173959
Related stable hotfix: #173979