export declare class Drawer {
    feedbackCanvas: HTMLCanvasElement;
    private feedbackContext;
    private mouse;
    constructor(selector: string | HTMLCanvasElement, width?: number, height?: number);
    clear(): void;
    private mouseDown(mousePosition);
    private mouseMove(e);
    private mouseUp();
    private lineDistance(x1, y1, x2, y2);
    private draw(mX, mY);
    private addListeners();
    private removeListeners();
}