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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | 8x 8x 5x 5x 2x 3x 5x 5x 5x | import { purry } from './purry';
import { AnyArray } from './_types';
type IsPickKey<T extends { [k: string]: unknown }, Keys extends string> = Keys extends keyof T ? 'ON' : 'OFF'
/**
* Creates an object composed of the picked `object` properties.
* @param object the target object
* @param names the properties names
* @signature R.pick(object, [prop1, prop2])
* @example
* P.pick({ a: 1, b: 2, c: 3, d: 4 }, ['a', 'd']) // => { a: 1, d: 4 }
* @example
* P.pipe({ a: 1, b: 2, c: 3, d: 4 }, R.pick(['a', 'd'])) // => { a: 1, d: 4 }
* @data_first
* @category Object
*/
export function pick<T extends {}, Q extends string>(
object: T,
names: AnyArray<Q>
// @ts-ignore
): IsPickKey<T, Q> extends 'ON' ? { [k in Q]: T[k] } : { [k in keyof T]?: T[k] };
export function pick<T extends {}, K extends keyof T>(
object: T,
names: readonly K[]
): { [k in K]: T[k] };
export function pick<T extends {}, Q extends string>(
names: readonly Q[]
// @ts-ignore
): (object: T) => IsPickKey<T, Q> extends 'ON' ? { [k in Q]: T[k] } : { [k in keyof T]?: T[k] };
export function pick() {
return purry(_pick, arguments);
}
function _pick(object: any, names: string[]) {
if (object == null) {
return {};
}
return names.reduce((acc, name) => {
Eif (name in object) {
acc[name] = object[name];
}
return acc;
}, {} as any);
} |