number finite - nberlette/is GitHub Wiki

@nick/is/number/finite

isFinite

Signature

function isFinite<N = number>(it: N): it is Finite<N>;

Checks if a given value is a finite number.

Parameters
Name Info
it The value to check.
Returns

true if the value is a finite number, false otherwise.

Category

Numbers

Examples

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

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

isFinite

Signature

function isFinite(it: unknown): it is Finite;

Checks if a given value is a finite number.

Parameters
Name Info
it The value to check.
Returns

true if the value is a finite number, false otherwise.

Category

Numbers

Examples

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

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

Finite

Signature

export type Finite<N = number> = Cast<N, FINITE>;

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

Type Parameters
  • N (default: number)
Category

Numbers

MaybeFinite

Signature

export type MaybeFinite<N = number> = Cast<N, MAYBE_FINITE>;

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

Type Parameters
  • N (default: number)
Category

Numbers

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