import type { Terminal, SGRTerminal } from './terminal.js';
import type { Color } from './Color.js';
import { Style } from './Style.js';
import { Size } from './geometry.js';
export declare class Buffer implements Terminal {
    #private;
    size: Size;
    setForeground(_fg: Color): void;
    setBackground(_bg: Color): void;
    resize(size: Size): void;
    /**
     * Invalidates the diff cache so the next flush writes all cells.
     * Used by test harnesses that reset the terminal between renders.
     */
    invalidate(): void;
    /**
     * Writes the string at the cursor from left to write. Exits on newline (no default
     * wrapping behavior).
     */
    writeChar(char: string, x: number, y: number, style: Style): void;
    /**
     * Fills a rectangular region with BG_DRAW cells lazily.
     * The cells are materialized during flush or when overwritten by writeChar.
     */
    paintRect(style: Style, minX: number, minY: number, maxX: number, maxY: number): void;
    /**
     * Replaces the style of an existing cell without changing its character.
     * If no cell exists at (x, y), writes a space with the given style.
     */
    restyleChar(x: number, y: number, style: Style): void;
    /**
     * For ANSI sequences that aren't related to any specific character.
     */
    writeMeta(str: string): void;
    flush(terminal: SGRTerminal): void;
}