import { Observable } from 'rxjs';
import { ProcessedField } from '../components/forms/form.interfaces';
declare global {
    interface String {
        process(data: any): string;
        decamelify(): string;
        capitalizeFirstLetter(): string;
    }
    interface Math {
        randomInt(min: number, max: number): number;
    }
}
export declare function init(): void;
export declare function processExpression(expression: string, data: any | ProcessedField[]): string;
export declare function fieldsArrayToObject(fields: ProcessedField[]): any;
export declare function downloadFile(content: any, fileName: any, contentType: any, beautify?: boolean): void;
export declare function simpleClone(obj: any): any;
declare global {
    interface Array<T> {
        delete(elements: T[] | T): void;
        last(): T;
        nextTo(current: T): T;
        getUniqueByProperty(prop: string): T[];
    }
}
export declare function Required(target: object, propertyKey: string): void;
export declare function delay(duration?: number): Promise<null>;
export declare function wrapDataWithObservable<T>(data: any, init_timeout?: number): Observable<T>;
export declare function wrapDataWithPromise<T>(data: T, init_timeout?: number): Promise<T>;
export declare function errorToString(error: Error | string): string;
export declare function blobToText(blob: Blob): Promise<string>;
export declare function makeResizable(el: HTMLElement, container: string | HTMLElement, resizer: HTMLElement, minimum_width?: number, maximum_width_gap?: number): void;