export declare class CollectService {
    constructor();
    /**
       * Method generate list to map (array 2D)
       * @param keyField		field name we want to use it as key
       * @param lstRecords 	list records that we want to convert to map
       * @return map<key, object>
     *
     * e.g.
     * arrayObject = [
     *                  {id:001, name: 'T1'},
     *                  {id:002, name: 'T2'}
     *                ];
     *
     * => resut = {
     *              001: {id:001, name: 'T1'},
     *              002: {id:002, name: 'T2'}
     *            }
       */
    keyBy(keyField: any, lstRecords?: any[]): {};
    /**
     * Method to chunk array
     * @param arr 			array to chunk
     * @param chunkSize 	chunk size
     * @return new array chunked
     */
    spliceIntoChunks(arr: any, chunkSize: any): any[];
}