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Krzysztof kuhy Rudnicki
49d82511c3
Renames this repo's markdown onto README.md / CLAUDE*.md / DOCS*.md / TODO*.md so a future session can tell a live task from a finished record without reading the file to find out. TODO files carry the literal "REMOVE ME AFTER FINISH" and are deleted when the work lands. Enforced by the md-naming pre-commit hook and CI workflow, both delegating to the shared gate in kuhyx/utils so this repo's idea of a valid name cannot drift from every other repo's. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01A47aX5DJwmA3QFn3pkEWi7
79 lines
3.6 KiB
Markdown
79 lines
3.6 KiB
Markdown
# App split recipes (Dart, Kotlin, TypeScript)
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Settled while clearing `focus_owner`, `kcd2_dice_solver` and
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`reverse_survivors`. Referenced from `refactor_claude_todo_resume.md`.
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## Baselines — measure before editing, re-check after
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| Project | Command | Expect |
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| ---------------------- | ------------------- | -------------- |
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| `focus_owner` (Dart) | `flutter test` | 94 |
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| `focus_owner` (Kotlin) | see below | 40, 0 failures |
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| `kcd2_dice_solver` | `npm test -- --run` | 288 |
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| `reverse_survivors` | `npm test -- --run` | 160 |
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Gradle prints `UP-TO-DATE` rather than a count, so read the JUnit XML, and
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**pin the JDK** — the default JDK 26 breaks the AGP jlink transform:
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```bash
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cd focus_owner/android
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JAVA_HOME=/usr/lib/jvm/java-21-openjdk ./gradlew testDebugUnitTest --offline
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grep -ho 'tests="[0-9]*"' ../build/app/test-results/testDebugUnitTest/*.xml \
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| grep -oP '\d+' | paste -sd+ | bc
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```
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## Dart: privates are library-scoped, so use `part`
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A separate file is a separate **library**, so `_Card` and friends are invisible
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to it. Splitting `main.dart` with `import` + `export` produced 30 errors of the
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form "The name `_Card` isn't a class". `part 'x.dart';` + `part of 'main.dart';`
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keeps both files in one library and the analyzer goes straight to zero issues.
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The part file carries **no imports of its own** — it inherits the library's.
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**A `part` cannot rescue a State class.** `status_page_state.dart` stayed over
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the cap: its methods call `setState` and read seven private fields, and a
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`mixin on State<...>` cannot see them without declaring the state twice.
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**Splitting a widget test off its `testWidgets` group loses the binding.**
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Four tests failed with "Binding has not yet been initialized" because the
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group that had been initialising it implicitly moved away. Add
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`TestWidgetsFlutterBinding.ensureInitialized()` to **both** halves.
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## Kotlin: no `part`, so use an internal fixture object
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Shared `private val`/`private fun` test fixtures go into an
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`internal object XFixtures` in the same package, and each test class delegates
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to it. Two compile failures came from missing one (`installed`) — list every
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`private` member of the original class before cutting.
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`EnforcementRunner.kt` is **not splittable** as it stands: its location block
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reads the private constructor property `context` and `prefs()` eleven times,
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which no extension function can reach.
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## TypeScript: `tsc` does not tell you a split worked
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Three separate projects had a seam that compiled clean and failed at runtime:
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- an import cycle leaves a constant `undefined` at module-init
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(`HEADSTART_POINTS`, twice, in `kcd2`);
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- a moved function is simply not there (`survivorStep`, 63 failures);
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- a type name that collides with a DOM global resolves to the DOM one — the
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error talks about `anchorNode` rather than saying the name is missing.
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**Always run the suite.** Prune the imports the split leaves behind by
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iterating on `tsc`'s own TS6133/TS6192/TS6196 output rather than guessing, but
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note it cannot see a helper another file still needs.
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## Coverage: new files must land inside the include glob
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`kcd2` and `reverse_survivors` both gate at 100%. New source modules are picked
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up automatically; **shared test fixtures must go in `src/test/`**, which the
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coverage `exclude` names by path. Beside the source they count as production
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code and break the gate — the same trap recorded for `poker-stakes`.
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## A split that empties a file must delete it
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`App.test.tsx` lost its last `describe` and vitest failed the whole run with
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"No test suite found in file". Remove the shell.
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