export { generatePdf } from './images/pdf';
export { generatePng } from './images/png';
export { generateSvg, generateSvgPath } from './images/svg';
/**
 * The error correction level for QR codes (`L`, `M`, `Q`, or `H`)
 *
 * * `L`: approximately 7% of error correction capability
 * * `M`: approximately 15% of error correction capability
 * * `Q`: approximately 25% of error correction capability
 * * `H`: approximately 30% of error correction capability
 */
export type ECLevel = 'L' | 'M' | 'Q' | 'H';
/** The structure of a _generated_ QR code */
export interface QrCode {
    /** The version of the QR code (1...40) */
    readonly version: number;
    /** The error correction level for the QR code */
    readonly ecLevel: ECLevel;
    /** The size (in pixels) of the QR code */
    readonly size: number;
    /** The QR code matrix */
    readonly matrix: readonly boolean[][];
}
/** Options for the generation of a {@link QrCode} */
export interface QrCodeGenerationOptions {
    /** The error correction level for the QR code (default: `M`) */
    ecLevel?: ECLevel;
    /** Whether to optimize URLs in QR codes (default: `false`) */
    url?: boolean;
}
/** Options to render a {@link QrCode} into an image */
export interface QrCodeImageOptions {
    /**
     * The number of pixels used for each dot in the matrix
     * (default: `1` for PNG/SVG and `9` for PDF)
     */
    scale?: number;
    /**
     * The size of the margin around the QR code in matrix modules
     * (default: `4` as per the QR code specification - the _quiet area_)
     */
    margin?: number;
}
/** QR code options */
export interface QrCodeOptions extends QrCodeGenerationOptions, QrCodeImageOptions {
}
/** Generate a {@link QrCode} from a string or binary message */
export declare function generateQrCode(message: string | Uint8Array, options?: QrCodeGenerationOptions): QrCode;
/** Generate a QR code in PNG format from a string or binary message */
export declare function generatePngQrCode(message: string | Uint8Array, options?: QrCodeOptions): Promise<Uint8Array>;
/** Generate a QR code in PDF format from a string or binary message */
export declare function generatePdfQrCode(message: string | Uint8Array, options?: QrCodeOptions): Promise<Uint8Array>;
/** Generate a QR code in SVG format from a string or binary message */
export declare function generateSvgQrCode(message: string | Uint8Array, options?: QrCodeOptions): string;
/** Generate a QR code as a PNG data URL from a string or binary message */
export declare function generatePngDataQrCode(message: string | Uint8Array, options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as a PDF data URL from a string or binary message */
export declare function generatePdfDataQrCode(message: string | Uint8Array, options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as a SVG data URL from a string or binary message */
export declare function generateSvgDataQrCode(message: string | Uint8Array, options?: QrCodeOptions): string;
/** Generate a QR code in PNG format from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'png', options?: QrCodeOptions): Promise<Uint8Array>;
/** Generate a QR code in PDF format from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'pdf', options?: QrCodeOptions): Promise<Uint8Array>;
/** Generate a QR code in SVG format from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'svg', options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as a PNG data URL from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'pngData', options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as a PDF data URL from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'pdfData', options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as a SVG data URL from a string or binary message */
export declare function generate(message: string | Uint8Array, format: 'svgData', options?: QrCodeOptions): Promise<string>;
/** Generate a QR code as an image */
export declare function generate<Format extends 'png' | 'pdf' | 'svg' | 'pngData' | 'pdfData' | 'svgData'>(message: string | Uint8Array, format: Format, options?: QrCodeOptions): Promise<Format extends 'png' ? Uint8Array : Format extends 'pdf' ? Uint8Array : string>;