/**
 * Basic event class which holds event type and data properties and which can be used as it is or
 * could be extended by any custom event class.
 */
export declare class Event<T = any> {
    readonly type: string | Symbol;
    readonly data?: T;
    private _defaultPrevented;
    private _defaultPreventedReason;
    /**
     * Create new event.
     * @param type Event string type
     * @param data Data shipped along with event notification, if any
     */
    constructor(type: string | Symbol, data?: T);
    /**
     * Flag which indicates that somewhere within event listeners default event action has been prevented
     * @returns {boolean}
     */
    get defaultPrevented(): boolean;
    /**
     * Optional reason notion of why default action was prevented.
     */
    get defaultPreventedReason(): string;
    /**
     * Prevent event default action
     */
    preventDefault(reason?: string): void;
    /**
     * Get a string representation of the event
     * @returns {string}
     */
    readonly toString: () => string;
}