redux-kotlin
DevelopmentUse when building or reviewing redux-kotlin (Kotlin Multiplatform Redux) code — adding/editing a feature slice, wiring the store, Compose state binding, effects/sync middleware, testing, the platform expect/actual shims, or modularization. Enforces the project's render-isolation / off-main-effects / mint-at-edge rules.
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redux-kotlin
Kotlin Multiplatform port of the Redux contract: a minimal core (redux-kotlin) plus opt-in
companion modules on one Store<S> contract. Recommended app organization is package-by-feature
(feature/<name>/ slice + shared core · infra · app · ui); the canonical example is examples/taskflow.
Always-apply rules (full text → ../../../examples/taskflow/ARCHITECTURE.md §17)
- Rule C — Render isolation. No composable reads a model (board/cards/columns) wholesale; every leaf binds the narrowest slice via
selectorState/fieldStateOfand is wrapped inkey(...); list derivation lives in pure functions/reducers. - Rule D — Identity split. A profile edit fans
EditProfileto the root account directory, the per-accountCollaboratorsModel, andSessionModel(bio) — identity is never duplicated inconsistently. - Rule E — Off-main effects. Effects originate only in middleware and run off-main; dispatch marshals back to main via
NotificationContext(no explicit main hop). Per-feature handlers compose into oneeffectsMiddleware. - Rule F — Delta-only status.
SyncEngineemitsonStatusonly on a realSyncStatuschange. - Rule G — Mint at the edge. Ids and timestamps come from
LocalIdGenerator/LocalClockat the dispatch site, never from a reducer. - Rule H — Single inset point. Window insets are applied once at the shell root.
- Rule I — State-keyed lifecycle effects. Screen-data loads key on state (the nav-derived slice, e.g.
BoardLifecycleEffectonnav.activeBoardId), never on navigation events — state-only entry points (process-death restore, deep links, DevTools time-travel, account-switch hydration) set state without replaying events, so an event-keyed load silently never runs. Fallback: match the hydrating action in middleware.
Decision routing
| If you are… | Read |
|---|---|
| Adding or editing a feature | feature-slice.md |
| Setting up the store / topology | store-setup.md |
| Compose state binding (Rule C) | compose-binding.md |
| Effects + sync (Rule E) | effects-sync.md |
| Testing + the verify loop | testing.md |
| Visual / golden UI verification (render f(state)→PNG, diff goldens) | snapshot.md |
| The 5 platform shims | platform-shims.md |
| Modularization | modularization.md |
| Debugging a running app (actions/state/diffs) | devtools.md |
Persisting/restoring state (process death, preloadedState, saveable, restored-screen-has-no-data) | state-persistence.md |
| Store consistency model (sync writes, async notify, timing) | store-consistency-model.md |
Pointers
- T0 index (modules, commands, layout):
AGENTS.md - Public API surface per module:
api-map.md - Architecture deep-dive:
ARCHITECTURE.md - Reference index:
references/README.md
Build/lint gate (never --no-verify; explicitApi() needs KDoc on every public decl): ./gradlew build, ./gradlew detektAll, ./gradlew apiCheck. Detail → ../../../CLAUDE.md.