export declare function getParamsByEvent<T>(event: any): T;
/**
 * Set the object property, it's support to using link property name like: a.b.c.d.e.f
 * @param _self
 * @param propertyName {string|Array}
 * @param value
 * @returns {*}
 */
export declare function setProperty(_self: any, propertyName: any, value: any): any;
export declare function isNumberProperty(key: any): boolean;
/**
 * Parse the property name to name array.
 *  eg:
 *      'a.b.c.d.e.t' => [a,b,c,d,e,t]
 * @param keyChain
 * @returns {*}
 */
export declare function parseKeyChain(keyChain: any): any;
/**
 * Get the object property, it's support to using link property name like: a.b.c.d.e.f
 * @param _self
 * @param propertyName
 * @returns {*}
 */
export declare function getProperty(_self: any, propertyName: any): any;
export declare function toBase64(str: string): string;