timer-shim

Timer-shim is a lightweight wrapper around setTimeout, setInterval, and clearTimeout/clearInterval that facilitates testing time-dependent code without modifying global state. It provides multiple aliases (e.g., timer.timeout, timer.to, timer.t) for convenience and validates arguments against NaN and non-function values. Version 0.3.0 is stable but appears unmaintained (last release 2012). Unlike sinon's fake timers, timer-shim only stubs calls without advancing time. Its key differentiator is simplicity and avoidance of global overrides, making it suitable for isolated unit tests.