declare global {
    interface Array<T> {
        at(o: number): T;
    }
}
/**
 * Polyfill for Safari
 * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at
 */
export declare function at(this: {
    value: (n: any) => any;
    writable: true;
    enumerable: false;
    configurable: true;
}, n: any): any;