/**
 * Helper for finding first element index from array that meets check condition
 *
 * @param {Array<any>} arr - target array
 * @param {Function} check - check function
 * @param {number} [startFrom=0] - index from which to start search
 * @returns {number} - found element index
 */
export declare function findIndex(arr: Array<any>, check: Function, startFrom?: number): number;
declare const _default: {
    findIndex: typeof findIndex;
};
export default _default;