Variable number_isNaN`Const`

number_isNaN: (number: unknown) => boolean = ...

alias for Number.isNaN.

Type declaration

- (number: unknown): boolean
- Returns a Boolean value that indicates whether a value is the reserved value NaN (not a number). Unlike the global isNaN(), Number.isNaN() doesn't forcefully convert the parameter to a number. Only values of the type number, that are also NaN, result in true.
  Parameters
  - number: unknown
    A numeric value.
  Returns boolean