/** Fixed black/white rather than the terminal theme's ANSI palette. */
export declare const QR_DARK = "\u001B[48;5;16m";
export declare const QR_LIGHT = "\u001B[48;5;231m";
export declare const QR_LIGHT_FG = "\u001B[38;5;231m";
export declare const QR_QUIET_ZONE = 4;
interface TerminalQRViewport {
    columns?: number | undefined;
    rows?: number | undefined;
}
interface TerminalQROptions extends TerminalQRViewport {
    terminalProgram?: string | undefined;
}
export declare class TerminalQRSizeError extends Error {
    constructor();
}
/** Dark modules, surrounded by the four-module quiet zone required by QR. */
export declare function terminalQRGrid(value: string): boolean[][];
/** Watch owns its viewport checks so a cached QR can appear after a resize. */
export declare function renderTerminalQR(value: string, options?: TerminalQROptions): string;
/** One-shot output must fit without wrapping; leave room for its link/cursor. */
export declare function renderTerminalQRForOutput(value: string, output?: TerminalQRViewport): string;
export {};
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