Variable isSafeInt`Const`

isSafeInt: (a: number) => a is SafeInt = is

Type guard that checks if a value is a safe integer.

Returns true for a safe integer — a value with no fractional component.

Type Declaration

- (a: number): a is SafeInt
- Parameters
  - a: number
  Returns a is SafeInt
  true if the value is a safe integer, false otherwise

Example

assert.isTrue(isSafeInt(Number.MAX_SAFE_INTEGER));

assert.isFalse(isSafeInt(Number.MAX_SAFE_INTEGER + 0.5));

assert.isTrue(SafeInt.is(Number.MIN_SAFE_INTEGER));