export declare const DISABLE_TERMINAL_OUTPUT_BUFFER_ENV = "PIX_DISABLE_TERMINAL_OUTPUT_BUFFER";
export declare const TERMINAL_OUTPUT_BUFFER_ENV = "PIX_TERMINAL_OUTPUT_BUFFER";
export type TerminalOutputFrameRow = {
    row: number;
    output: string;
};
export type TerminalOutputFrame = readonly TerminalOutputFrameRow[];
export type TerminalOutputRegion = "statusLine";
export type TerminalOutputBufferOptions = {
    enabled?: boolean;
    env?: Record<string, string | undefined>;
};
export declare class TerminalOutputBuffer {
    private readonly enabled;
    private readonly previousByRow;
    private previousStatusLine;
    constructor(options?: TerminalOutputBufferOptions);
    diffFrame(frame: TerminalOutputFrame): string;
    diff(region: TerminalOutputRegion, output: string): string;
    reset(): void;
}
export declare function terminalOutputBufferDisabled(env?: Record<string, string | undefined>): boolean;