RequireNotNullish

自 1.3.0 起

确保类型不是 null 或 undefined。

签名

type RequireNotNullish<T> = null extends T ? never : undefined extends T ? never : T

参数

参数	描述
T	要检查的类型

示例

基本用法

import type { RequireNotNullish } from 'uni-types'

type Result = RequireNotNullish<string> // string
type FailedNull = RequireNotNullish<null> // never
type FailedUndefined = RequireNotNullish<undefined> // never

联合类型

type MaybeString = string | null | undefined
type StrictString = RequireNotNullish<MaybeString> // never (包含 null/undefined)
type OptionalString = string | undefined
type NoUndefined = RequireNotNullish<OptionalString> // never

泛型类型

type NonNullish<T> = RequireNotNullish<T>
type SafeValue = NonNullish<number> // number
type UnsafeValue = NonNullish<number | null> // never

相关

• AssertNotNil - 断言类型不是 never
• RequireArray - 确保类型是数组