fail-fast

What problem does it solve?

This skill enforces fail-fast error handling to surface failures immediately and prevent silent corruption.

Core Features & Use Cases

• Fail fast: throw errors at the point of failure rather than swallowing or returning defaults.
• Propagate: errors flow to boundaries (API, UI) where they can be translated to meaningful responses.
• Apply across: useful for input validation, invariants, and critical operations in APIs, services, and background jobs.
• Use case: When processing a payment, a missing user or invalid card should throw an error rather than returning a false result.

Quick Start

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.