import { IBackground, IBorder, IFont, ILineHeight, IMargin, IPadding, IWidthHeight, TFontWeight } from './interfaces/interfaces';
import { Observable } from 'rxjs';
/**
 * An alternative lodash cloneDeep function. Use it on your own risk.
 * @param obj Object to be cloned.
 */
export declare function cloneDeep<T>(obj?: {}): T;
/**
 * An alternative lodash isEqual function. Use it on your own risk.
 * @param x Object to be compared
 * @param y the second Object to be compared
 */
export declare function isEqual(x: object, y: object): boolean;
/**
 * An alternative lodash defaultsDeep function. Use it on your own risk.
 * @param to The object with default properties
 * @param sources An array of objects with default properties
 */
export declare function defaultsDeep<T>(to?: T, ...sources: T[]): T;
/**
 * Create CSS border styles based on {@link IBorder} object.
 * @param border Border object.
 * @param rule Most likely you won't need it, but for some cases, it can be changed. Default is: `border`.
 *
 * @return CSS Border styles.
 */
export declare function createBorder(border: IBorder, rule?: string): {
    [p: string]: string;
    borderRadius: string;
};
/**
 * Create CSS padding styles based on {@link IPadding} object.
 * @param padding Padding object.
 * @param rule Most likely you won't need it, but for some cases, it can be changed. Default is: `padding`.
 */
export declare function createPadding(padding: IPadding, rule?: string): {
    [p: string]: string;
};
/**
 * Create CSS margin styles based on {@link IMargin} object.
 * @param margin Margin object.
 */
export declare function createMargin(margin: IMargin): {
    margin: string;
};
/**
 * Create CSS font styles based on {@link IFont} object.
 * @param font Font object.
 */
export declare function createFont(font: IFont): {
    fontFamily: string;
    fontSize: string;
    fontStyle: string;
    fontWeight: number | TFontWeight;
};
/**
 * Create CSS line-height styles based on {@link ILineHeight} object.
 * @param lineHeight Line-height object.
 */
export declare function createLineHeight(lineHeight: ILineHeight): {
    lineHeight: string;
};
/**
 * Create background styles based on {@link IBackground} object.
 * @param background Background object.
 */
export declare function createBackground(background: IBackground): string;
/**
 * Create Width or Height styles based on {@link IWidthHeight} object.
 * @param widthHeight Width or Height object.
 */
export declare function createWidthHeight(widthHeight: IWidthHeight): string;
/**
 * Convert bytes to KB-YB.
 * @param bytes Bytes number.
 * @param decimals How many decimals to be used. Default: 2.
 */
export declare function bytesToSize(bytes: number, decimals?: number): string;
/**
 * Get a Social Icon path.
 * @param path Icon path. Ex: facebook.png
 */
export declare function getAssetByPath(path: string): string;
/**
 * A simple and powerful function that allows to create an `Observable` only when it needs to be used.
 * @param args Arguments to send to new Observable.
 */
export declare function deferOf<T>(...args: T[]): Observable<T>;