Method flush

packages/pi-tui/test/virtual-terminal.ts:131–136

* Wait for all pending writes to complete. Viewport and scroll buffer will be updated.

()

	 * Wait for all pending writes to complete. Viewport and scroll buffer will be updated.
	 */
	async flush(): Promise<void> {
		// Write an empty string to ensure all previous writes are flushed
		return new Promise<void>((resolve) => {
			this.xterm.write("", () => resolve());
		});
	}

	/**
	 * Simulate the user scrolling the terminal window (negative = up into scrollback).