/**
 * A small QR encoder, enough to turn a URL into a scannable grid.
 *
 * Written rather than pulled in so the package keeps its "no dependencies" promise, and so no
 * reader's document URL is handed to a third-party image service to be logged. Deliberately
 * narrow: byte mode, error-correction level M, versions 1-10 (up to 271 characters at level M),
 * which covers any sane page URL. Longer input throws rather than silently producing a code that
 * will not scan.
 */
/** Encode `text` as a QR matrix: a square of 0/1 by row. */
export declare function encodeQr(text: string): {
    size: number;
    modules: Uint8Array;
};
/** Render a QR matrix as an SVG string, sized to `px`. */
export declare function qrSvg(text: string, px: number): string;