type-plus/ts/object/mapKey.ts

Provides additional types for TypeScript.

import type { KeyTypes } from './KeyTypes.js'

export function mapKey<R, S extends Record<KeyTypes, any>, T = any>(
	subject: S,
	predicate: (this: T, key: keyof S, index: number, obj: Array<keyof S>, subject: S) => R,
	thisArg?: T
): R[] {
	return Object.keys(subject).map(function (this: T, k, i, a) {
		return predicate.apply(this, [k, i, a, subject])
	}, thisArg)
}