/**
 * Return object keys
 * @param object - object value
 * @signature
 *    P.keys(object)
 * @example
 *    P.keys()(object)
 * @data_first
 * @category Array
 */
export declare function keys<T extends {
    [k: string]: unknown;
}>(): (object: T) => ReadonlyArray<keyof T>;
export declare function keys<T extends {
    [k: string]: unknown;
}>(object: T): ReadonlyArray<keyof T>;
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