- Every KV storage emits change events (base class owns writeMany/removeMany/ writeIfAbsent; implementations provide protected apply* methods) - KVStorageHttpServer streams changes over SSE (GET /events) with a resumable history; KVStorageHttp.watch() subscribes and resumes via Last-Event-ID - KVStorageIndexedDB for local persistence - KVStorageComposite keeps replicas of a source in sync: local reads, resume instead of full sync, offline outbox replayed in order, echo tracking - Values may contain bigint/Uint8Array (Extended JSON over the network) - Vendor sse-session, event-emitter and extended-json (no runtime deps) - Freeze child nodes so shadowed state on children fails loudly - CI on Node 22, 24 and 26 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_017Qxbkp4tA7G5SCWjzWuxmE
29 lines
1.5 KiB
Markdown
29 lines
1.5 KiB
Markdown
# PotentialStorage
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Layered TypeScript storage library: KV → Events → Documents. The design is in
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[DESIGN.md](./DESIGN.md); read it before changing anything and keep it up to date.
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## Commands
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- `npm test`: `tsc --noEmit`, then all Vitest tests (including `test/types.test-d.ts`)
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- `npm run test:only -- <file>`: Vitest only
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- `npm run typecheck`, `npm run build`, `npm run bench`
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- `npm run format` / `npm run format:check`: Prettier
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CI (`.gitea/workflows/ci.yml`, Gitea Actions) runs the format check, typecheck, tests and build on Node 22, 24 and 26.
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## Conventions
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- One abstract base class per layer (`src/<layer>/base-*.ts`); implementations only provide the raw
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primitives, and the user-facing API lives in the base class.
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- Classes over loose functions; TS `private`, not `#`; no overloads (use `param?` or tuple-union
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rest params); don't override base methods in subclasses.
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- **Never reassign a field after construction.** `child()` nodes are frozen `Object.create(root)`
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views, so `this.x = ...` on a child throws. Keep mutable state in a `private readonly state`
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object or in Maps (see `KVStorageComposite`, `KVStorageHttp`).
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- No runtime dependencies; third-party code is vendored (`src/utils/sse-session/`, `event-emitter.ts`,
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`extended-json.ts`, with a header naming the source). Tests live only in `test/`, mirroring `src/`.
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- New KV/document implementations must pass `test/kv-storage/kv-storage.conformance.ts` /
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`test/document-storage/document-storage.suite.ts`.
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- Ask the owner before pushing.
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