)]}' { "commit": "a216bc2bc0fe953a4f445884442ca52cd7fd075e", "tree": "3a43ba7ecdec9615ee6064d645bc2c1f27be8916", "parents": [ "ce6e766ad1ca31a720fe404aea3501dab2d9bcad" ], "author": { "name": "Nate Biggs", "email": "biggs0125@gmail.com", "time": "Tue Oct 06 02:00:51 2026 +0000" }, "committer": { "name": "GitHub", "email": "noreply@github.com", "time": "Tue Oct 06 02:00:51 2026 +0000" }, "message": "Reland: [tool] Add support for --[no-]deprecated-js-interop to the flutter tool (#193877)\n\nAdd `--[no-]deprecated-js-interop` flag for web compilation\nAdds a `--[no-]deprecated-js-interop` flag to `flutter build web`,\n`flutter run`, `flutter drive` and `flutter test`. The tool passes it to\nthe Dart web compilers, which recently gained this option:\n- https://dart-review.googlesource.com/c/sdk/+/555460\n- https://dart-review.googlesource.com/c/sdk/+/555500\nWith `--no-deprecated-js-interop`, the compilers reject imports of the\ndeprecated JS interop libraries (`dart:html`, `dart:js`, `dart:js_util`,\n`dart:svg`, `dart:indexed_db`, `dart:web_audio`, `dart:web_gl`, and\n`package:js` through its re-export of `dart:js_util`). dart2js also\nprints the import chain that brings each library in.\n### Changes\n**Passing the flag through**\n- The flag has three states. When it isn\u0027t set, nothing is passed and\nthe SDK default applies.\n- It is passed to:\n- dart2js, in both the CFE (kernel) phase and the JS compile phase,\nsince dart2js checks again when loading the dill;\n- DDC, through the frontend server, for `flutter run -d chrome` and\n`flutter test --platform chrome`.\n- It is not passed to dart2wasm.\n- The flag value is part of the `JsCompilerConfig` build key and of the\ncached kernel (`--initialize-from-dill`) path for DDC and web tests.\nChanging the flag invalidates old builds,\nand the incremental compiler never starts from a kernel file built with\na different value.\n**dart2js error output**\n- Before, a failing dart2js run threw a `ProcessException`. Its\ndiagnostics were buried in a single `Target dart2js failed:\nProcessException: ...` message.\n- Now the tool prints dart2js\u0027s stdout (where its diagnostics go) and\nits stderr to the tool\u0027s stderr, then exits with `Failed to compile\napplication for the Web.` This applies to all dart2js failures and\nmatches how DDC compile errors already appear.\n**Wasm dry run de-duplication**\n- With `--no-deprecated-js-interop`, the default wasm dry run of\n`flutter build web` no longer prints findings for deprecated JS interop\nimports, because dart2js already reports them as errors. These are\ndry-run codes 0 (`noDartHtml`), 1 (`noDartJs`), 14 (`noPackageJs`) and\n15 (`noDartJsUtil`).\n- Other findings, such as interop checks and lint violations, are still\nshown.\n- If no findings remain, the dry run prints nothing.\n- All findings, including the hidden ones, are still sent to analytics.\n\n---------\n\nCo-authored-by: Nate Biggs \u003cnatebiggs@google.com\u003e", "tree_diff": [ { "type": "modify", "old_id": "878bac41aa33b20c1f8781960491ff92603c17c5", "old_mode": 33188, "old_path": "packages/flutter_tools/lib/src/base/process.dart", "new_id": "c3124cd594cd5e71db23896ef59eff62e8c14cc6", "new_mode": 33188, "new_path": "packages/flutter_tools/lib/src/base/process.dart" }, { "type": "modify", "old_id": "17b5c352531ac855af57fa0218f1549ea5db234f", "old_mode": 33188, "old_path": "packages/flutter_tools/lib/src/build_info.dart", "new_id": "3fb7b79f62b1022dcced91c1cdd8e36403149a1a", "new_mode": 33188, "new_path": "packages/flutter_tools/lib/src/build_info.dart" }, { 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