Or

Since 1.1.0

Logical OR operator for boolean types.

Signature

type Or<A extends boolean, B extends boolean> = A extends true ? true : B

Parameters

Parameter	Description
A	First boolean type
B	Second boolean type

Examples

Basic Usage

import type { Or } from 'uni-types'

type A = Or<true, true>     // true
type B = Or<true, false>    // true
type C = Or<false, true>    // true
type D = Or<false, false>   // false

Either Condition

import type { Or, IsString, IsNumber } from 'uni-types'

type IsPrimitive<T> = Or<IsString<T>, IsNumber<T>>

type A = IsPrimitive<string>  // true
type B = IsPrimitive<number>  // true
type C = IsPrimitive<object>  // false

Related

• If - Conditional types
• Not - Logical NOT
• And - Logical AND