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pick

返回从对象或数组中,提取指定的键或索引的新对象或者数组,返回值是普通对象或数组,不会修改入参。

Added in v0.0.1

Usage

typescript
import { pick } from 'parsnip-kit'

const obj = { a: 1, b: 2, c: 3 }
const keys0 = ['a', 'c'] as const
const result0 = pick(obj, keys0)
// Pick<{ a: number; b: number; c: number; }, "a" | "c">
// { a: 1, c: 3 }

const arr = [1, 2, 3, 4]
const keys1 = ['1', '[3]'] as const
const result1 = pick(obj, keys1)
// Pick<number[], 1 | 3>
// [2, 4]

API

Type Parameter

ArgTypeDescription
Textends object待处理对象的类型
Rextends readonly string[]字段路径数组类型

Arguments

ArgTypeOptionalDefaultDescription
objTfalseundefined待处理的对象或数组
keysRfalseundefined需要提取的键或数组索引

Returns

Type
Pick<T, KeyOrIndex<ExtractUnion<R>> & keyof T>

Reference

KeyOrIndex ExtractUnion