ObjectPickByType

Since v1.3.0

按值类型选取对象属性。创建一个仅包含值继承自指定类型属性的新对象类型。

签名

export type ObjectPickByType<T extends Record<string, any>, U> = {
	[K in keyof T as T[K] extends U ? K : never]: T[K]
}

参数

参数	说明
T	源对象类型
U	要选取的值类型

示例

基本用法

import type { ObjectPickByType } from 'uni-types'

type User = { name: string; age: number; email: string; score: number }
type OnlyStrings = ObjectPickByType<User, string>
// { name: string; email: string }

选取函数属性

import type { ObjectPickByType } from 'uni-types'

type Methods = { greet: () => void; count: number; farewell: () => string; id: number }
type OnlyFunctions = ObjectPickByType<Methods, Function>
// { greet: () => void; farewell: () => string }