import { DomSanitizer } from "@angular/platform-browser";
export declare class NgxObjectDiffService {
    private sanitizer;
    private openChar;
    private closeChar;
    constructor(sanitizer: DomSanitizer);
    /**
     * @param char
     */
    setOpenChar(char: string): void;
    /**
     * @param char
     */
    setCloseChar(char: string): void;
    /**
     * diff between object a and b
     * @param a
     * @param b
     * @param shallow
     * @param isOwn
     * @return
     */
    diff(a: Object, b: Object, shallow?: boolean, isOwn?: boolean): {
        changed: string;
        value: any;
    };
    /**
     * compare and build the difference of two objects taking only its own properties into account
     * @param a
     * @param b
     * @param shallow
     */
    diffOwnProperties(a: Object, b: Object, shallow?: boolean): {
        changed: string;
        value: any;
    };
    /**
     * Convert to a readable xml/html Json structure
     * @param changes
     * @return
     * @param shallow
     */
    toJsonView(changes: any, shallow?: boolean): string;
    /**
     * Convert to a readable xml/html Json structure
     * @return
     * @param obj
     * @param shallow
     */
    objToJsonView(object: any, shallow?: boolean): Object;
    /**
     * Convert to a readable xml/html Json structure
     * @param changes
     * @return
     * @param shallow
     */
    toJsonDiffView(changes: any, shallow?: boolean): string;
    /**
     * Convert to a readable xml/html Json structure
     * Convert to a readable xml/html Json structure
     * @return
     * @param obj
     * @param shallow
     */
    private formatObjToJsonXMLString;
    /**
     * Convert to a readable xml/html Json structure
     * @param changes
     * @return
     * @param shallow
     */
    private formatToJsonXMLString;
    private formatChangesToXMLString;
    /**
     * @param key
     * @param diffItem
     * @returns
     * @param shallow
     * @param diffOnly
     */
    private formatChange;
    /**
     * @param obj
     * @return
     * @param shallow
     */
    private inspect;
    /**
     * @param accumulator
     * @param obj
     * @see http://jsperf.com/continuation-passing-style/3
     * @return
     * @param shallow
     */
    private _inspect;
    /**
     * @param key
     * @return
     */
    private stringifyObjectKey;
    /**
     * @param string
     * @return
     */
    private escapeHTML;
    /**
     * @param obj
     * @returns
     */
    private equalObj;
    /**
     * @param a
     * @param b
     * @returns
     */
    private isValidAttr;
}