/**
 * Add text to the text buffer
 *
 * @param text
 * @param targetWindow
 */
export function append(text: any, targetWindow?: number): void;
/**
 * Print out the text buffer
 *
 * @param targetWindow
 */
export function flush(targetWindow: any): void;
/**
 * Register the output filter
 */
export function init(opt: any): void;
/**
 * Add a newline to the buffer.
 *
 * @param targetWindow
 */
export function newline(targetWindow: any): void;