cbc3c3fd8e
AGENTS.md watermarks refreshed to HEAD (4dedc72). Watermark bump only —
no code changes since last gardener run.
Pending actions (3): re-queue promotion of #1155 pitch-deck to backlog
(pending actions from PR #1162 were not executed by orchestrator).
Escalate: #1158 (Phase 1 completion accuracy) — still needs planner/human decision.
55 lines
3.9 KiB
Markdown
55 lines
3.9 KiB
Markdown
<!-- last-reviewed: 4dedc723753c1fb776766cd22ff56e5659d2bbb0 -->
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# Kraiken Library - Agent Guide
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Shared TypeScript helpers used by the landing app, txnBot, and other services to talk to KRAIKEN contracts and the Ponder GraphQL API.
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## Responsibilities
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- Provide type-safe contract interaction helpers (encoding inputs, parsing results).
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- Supply Ponder GraphQL query helpers and generated types for protocol stats and staking positions.
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- Centralise staking math (tax calculations, snatch selection, share conversions) for reuse across clients.
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## Key Modules
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- `src/staking.ts` - Harberger staking helpers for delinquency checks and snatch math.
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- `src/snatch.ts` - Snatch selection engine and supporting types.
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- `src/ids.ts` - Position ID encoding helpers.
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- `src/subgraph.ts` - Byte utilities shared between the GraphQL layer and clients.
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- `src/abis.ts` - Contract ABIs imported directly from `onchain/out/` forge artifacts. Single source of truth for all ABI consumers.
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- `src/taxRates.ts` - Generated from `onchain/src/Stake.sol` by `scripts/sync-tax-rates.mjs`; never edit by hand.
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- `src/version.ts` - Version validation system tracking `KRAIKEN_LIB_VERSION` and `COMPATIBLE_CONTRACT_VERSIONS` for runtime dependency checking.
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## GraphQL Code Generation
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- Schema source points to the Ponder GraphQL endpoint for the active environment.
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- Scalar mappings: `BigInt` -> `string`, `BigDecimal` -> `string`, `Bytes` -> `string`, `Int8` -> `number`.
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- Always import the generated DocumentNodes; avoid `any` casts to keep inference intact.
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## Package Scripts
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- `npm install --legacy-peer-deps`
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- `npm run compile` - Regenerate GraphQL types.
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- `npm run watch` - Continuously regenerate on schema changes.
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- `npm test` - Execute Jest suite for helper coverage.
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## Integration Notes
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- Landing app consumes `kraiken-lib/abis`, `kraiken-lib/staking`, and `kraiken-lib/subgraph` for ABI resolution and ID conversion.
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- txnBot relies on `kraiken-lib/staking` and `kraiken-lib/ids` to evaluate profitability and tax windows.
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- Ponder imports `kraiken-lib/abis` for indexing, and `kraiken-lib/version` for cross-service version checks.
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- When the Ponder schema changes, rerun `npm run compile` and commit regenerated types to prevent drift.
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## Import Guidance
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- The legacy `helpers.ts` barrel has been removed. Always import from the narrow subpaths (e.g. `kraiken-lib/abis`, `kraiken-lib/staking`, `kraiken-lib/snatch`, `kraiken-lib/subgraph`).
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- Avoid importing `kraiken-lib` directly; the root module no longer re-exports the helper surface and exists only to raise build-time errors for bundle imports.
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## ES Module Architecture
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- **Module Type**: This package is built as ES modules (`"type": "module"` in package.json). All consumers must support ES modules.
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- **Import Extensions**: All relative imports in TypeScript source files MUST include `.js` extensions (e.g., `from "./staking.js"`). This is required for ES module resolution even though the source files are `.ts`.
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- **JSON Imports**: JSON files (like ABI artifacts) must use import assertions: `import Foo from './path.json' assert { type: 'json' }`.
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- **TypeScript Config**: `tsconfig.json` must specify:
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- `"module": "esnext"` - Generate ES module syntax
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- `"moduleResolution": "node"` - Enable proper module resolution
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- `"rootDir": "./src"` - Ensure flat output structure in `dist/`
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- **Build Output**: Running `npx tsc` produces ES module `.js` files in `dist/` that can be consumed by both browser (Vite) and Node.js (≥14 with `"type": "module"`).
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- **Container Mount**: Docker services bind-mount `dist/` read-only from the host. Run `./scripts/build-kraiken-lib.sh` before `docker-compose up` or keep `scripts/watch-kraiken-lib.sh` running to rebuild automatically.
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## Quality Guidelines
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- Keep helpers pure and side-effect free; they should accept explicit dependencies.
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- Prefer narrow exports so downstream consumers can tree-shake bundles.
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- Extend typings instead of loosening them; reject `any` as a quick fix.
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