import { HttpParams } from '@angular/common/http';
export declare function validateNonCharKeyCode(keyCode: string): boolean;
export declare function validateArrowKeys(keyCode: string): boolean;
export declare function isIndexActive(index: number, currentIndex: number): boolean;
export declare function isEnterKey(event: KeyboardEvent): boolean;
export declare function isEscapeKey(event: KeyboardEvent): boolean;
export declare function createParamsForQuery(query: string, queryParamKey?: string, customParams?: {}): HttpParams;
export declare function resolveApiMethod(method?: string): string;
export declare const NO_INDEX = -1;
export declare function resolveNextIndex(currentIndex: number, stepUp: boolean, listLength?: number): number;
export declare function toJsonpSingleResult(response: any): any;
export declare function toJsonpFinalResults(results: any[]): any[];
export declare function hasCharacters(query: string): boolean;
export declare function toFormControlValue(e: any): any;
export declare function resolveItemValue(item: string | any, fieldsToExtract: string[], caseSensitive?: boolean): any;