x-is-function

x-is-function is a minimalist JavaScript utility designed to accurately determine if a given value is of the type 'function'. As of its latest version 1.0.4, published in 2015, the package is considered abandoned, with no active maintenance or release cadence. It provides a single, dependency-free export, `isFunction`, which performs a basic `typeof value === 'function'` check. Its primary differentiation from more comprehensive utility libraries or direct `typeof` checks in modern JavaScript environments is its historical position as part of a family of single-purpose `x-is-...` modules, emphasizing a focused, tiny API surface for specific type checks. Due to its age, it is primarily a CommonJS module.