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Agent Guidelines for effect-messaging

Commands

Build: pnpm build
Test: pnpm test (single test: pnpm test path/to/test.test.ts)
Lint: pnpm lint (fix: pnpm lint-fix)
Type check: pnpm check
Coverage: pnpm coverage

Code Style

Use Effect ecosystem libraries (effect, @effect/platform, @effect/vitest)
Import style: import type * as X from "module" for types, regular imports for values
No semicolons, no trailing commas
2-space indentation, 120 char line width
Double quotes for strings
Use @since JSDoc tags for new APIs
Prefix unused variables with underscore
Use generic array types: Array<T> not T[]

Testing

Run pnpm build and pnpm lint before testing
Use @effect/vitest for testing utilities
Test files in test/ directories with .test.ts extension

Changesets

Always run pnpm changeset after changes
Use patch for dependency updates/bug fixes
Include specific version numbers in summaries