effect-ts-anti-patterns

SKILL.md

Overview Effect-TS provides a powerful functional framework, but common imperative habits can bypass its safety guarantees. This skill identifies and fixes patterns that lead to resource leaks, process crashes, and unhandled errors.

| Anti-Pattern | Bad Code | Good Code | Why |

| Run Outside Boundary | await Effect.runPromise(fx) mid-function | yield fx (compose) | Bypasses error channel & tracing. | | Missing yield | const user = yield fetchUser() | const user = yield fetchUser() | Yields the Effect object, not the result. |

Use when reviewing Effect-TS code, debugging unexpected crashes, or optimizing concurrent operations. Source: mrevanzak/effect-ts-skills.

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