declare type Mutable<T> = {
    -readonly [P in keyof T]: T[P];
};
interface Picker {
    <O, K extends keyof O>(obj: O, keys: K[]): Mutable<Pick<O, K>>;
    <O, M extends Record<string, keyof O>>(obj: O, keysOrMap: M): Mutable<{
        [K in keyof M]: O[M[K]];
    }>;
}
export declare const pick: Picker;
export {};