/**
 * 生成水印函数
 *
 * @category Utils
 */
export declare function __canvasWM({ container, width, height, textAlign, textBaseline, font, fillStyle, content, rotate, zIndex, }?: {
    container?: Element | null | undefined;
    width?: string | undefined;
    height?: string | undefined;
    textAlign?: string | undefined;
    textBaseline?: string | undefined;
    font?: string | undefined;
    fillStyle?: string | undefined;
    content?: string | undefined;
    rotate?: number | undefined;
    zIndex?: number | undefined;
}): void;