Enforce fail-fast error handling with throw/catch patterns in APIs and services.
npx skills add https://github.com/yanko-belov/code-craft --skill fail-fast
Please help me install this Agent Skill. Skill: fail-fast Source: https://github.com/yanko-belov/code-craft/tree/main/skills/fail-fast Command: npx skills add https://github.com/yanko-belov/code-craft --skill fail-fast
This skill enforces fail-fast error handling to surface failures immediately and prevent silent corruption.
Apply the fail-fast pattern to a function that handles critical operations to ensure invalid inputs throw immediately and errors propagate to the API boundary.
High-intent search queries and answers about installing and using this skill.
Fail-fast error handling in TypeScript APIs validates inputs and asserts invariants by throwing well-defined error types immediately at the point of failure, propagating them to the API boundary rather than returning defaults.
Errors should propagate to boundaries to surface failures immediately and prevent silent data corruption. Swallowing errors or returning defaults masks critical failures, such as missing users during payment processing, making debugging difficult.
Use the fail-fast pattern in services and background jobs for critical operations like input validation, invariant checking, and payment processing where silent failures or default values would cause data corruption or incorrect business logic.
No external libraries are required to enforce fail-fast error handling. The approach uses conventional throw/catch patterns and well-defined error types natively available in TypeScript to validate inputs and propagate errors to interaction boundaries.
The best way to handle invalid inputs in console apps without swallowing errors is to throw well-defined error types immediately at the point of detection, letting the error propagate to the console interaction boundary for meaningful display.
Avoid the fail-fast approach when default values or graceful degradation are explicitly desired for non-critical operations, as this pattern strictly throws errors to surface failures immediately rather than allowing the process to continue with fallback data.
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