number negative integer

@nick/is/number/negative-integer

isNegativeInteger

Signature

function isNegativeInteger<N = number>(it: N): it is NegativeInteger<N>;

Checks if a given value is a negative integer.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is a negative integer, false otherwise.

Category

Numbers

Examples

import { isNegativeInteger } from "jsr:@nick/is/integer";

console.log(isNegativeInteger(0)); // false
console.log(isNegativeInteger(1)); // false
console.log(isNegativeInteger(-1)); // true
console.log(isNegativeInteger(1.5)); // false
console.log(isNegativeInteger(NaN)); // false
console.log(isNegativeInteger(Infinity)); // false

isNegativeInteger

Signature

function isNegativeInteger(it: unknown): it is NegativeInteger<number>;

Checks if a given value is a negative integer.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is a negative integer, false otherwise.

Category

Numbers

Examples

import { isNegativeInteger } from "jsr:@nick/is/integer";

console.log(isNegativeInteger(0)); // false
console.log(isNegativeInteger(1)); // false
console.log(isNegativeInteger(-1)); // true
console.log(isNegativeInteger(1.5)); // false
console.log(isNegativeInteger(NaN)); // false
console.log(isNegativeInteger(Infinity)); // false

NegativeInteger

Signature

export type NegativeInteger<N = number> = Cast<N, NEGATIVE & INTEGER>;

Casts a value into a negative integer type. If the value is not a number, it will resolve to never.

Type Parameters

• N (default: number)

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Category

Numbers