A function is a relation or expression involving one or more variables.
Get the native type of a value.
An async function is a function that delivers its result asynchronously.
Function argument validation for humans
Returns true if a value is a plain object, array or function.
Check if something is a generator function
Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
Used to check if some of the arguments are null or undefined.
Check that given value is `GeneratorFunction`
isone is a low efficiency library to test if the given number is 1 implement with Unit function
Validates if a value is a function.