export declare type EitherCanvasContext = OffscreenCanvasRenderingContext2D | CanvasRenderingContext2D;
export declare function fixY(height: number, y: number): number;
export declare const clearCanvas: (ctx: EitherCanvasContext) => void;
export declare const circle: (ctx: EitherCanvasContext, size: number) => void;
export declare function horizLine(ctx: CanvasRenderingContext2D, length: number): void;