remove-single-use-functions

name	remove-single-use-functions
description	Safe inlining and removal of single-use functions during code review and refactoring. Use when a local, non-exported helper has exactly one real call site and inlining preserves behaviour and readability.

Remove Single-Use Functions

Use this skill when reviewing or editing cleanup/refactor changes that inline and remove functions used exactly once:

• The function must be local and non-exported.
• The function must have exactly one real call site after the current change set is applied.
• Preserve runtime behavior, types, and existing style.
• Skip public APIs, framework hooks, callbacks, overloaded or generic utilities, and test helpers kept for readability.
• Safe cleanup means inlining the function at its sole call site and then removing the original function definition.
• Do not introduce any.
• Do not use the non-null assertion operator (!).
• Do not add unnecessary comments or abstractions.