Dec

Since 1.1.0

Decrement a number type by 1.

Signature

type Dec<N extends number> = N extends 0 
  ? 0 
  : NumberToArray<N> extends [0, ...infer Rest] 
    ? Rest['length'] 
    : 0

Parameters

Parameter	Description
N	The number to decrement

Description

Decrement is clamped at 0 - decrementing 0 returns 0.

Examples

Basic Usage

import type { Dec } from 'uni-types'

type A = Dec<5>   // 4
type B = Dec<1>   // 0
type C = Dec<0>   // 0 (clamped)

Related

• Inc - Increment a number
• Subtract - Subtract two numbers