/**
 * PDF attachments + Factur-X/ZUGFeRD e-invoice container options.
 *
 * Environment-neutral (Node, browser, workers): used by every entry
 * point so the option mapping cannot drift between them.
 *
 * Tier-1 container support only: the caller supplies the invoice XML;
 * Forme embeds it as a PDF/A-3 associated file with the Factur-X XMP
 * identification. Forme does NOT generate or validate EN 16931 semantic
 * content.
 */
/** `/AFRelationship` values (PDF 2.0 §14.13, required by PDF/A-3). */
export type AfRelationship = 'Data' | 'Source' | 'Alternative' | 'Supplement' | 'Unspecified';
export interface AttachmentOptions {
    /** Filename recorded in the PDF (e.g. `factur-x.xml`). */
    name: string;
    /** File content: bytes, or a string treated as UTF-8 text. */
    data: Uint8Array | string;
    /** MIME type (PDF/A-3 requires one); default `application/octet-stream`. */
    mimeType?: string;
    /** Default `Unspecified` (the Factur-X path derives it from the profile). */
    relationship?: AfRelationship;
    /** Optional human-readable description. */
    description?: string;
    /**
     * `/Params /ModDate` as a PDF date string (`D:YYYYMMDDHHmmSSZ`).
     * Defaults to a fixed constant — never wall-clock — so output stays
     * byte-deterministic.
     */
    modDate?: string;
}
/** Factur-X / ZUGFeRD profile names, exactly as XMP spells them. */
export type FacturXProfile = 'MINIMUM' | 'BASIC WL' | 'BASIC' | 'EN 16931' | 'EXTENDED' | 'XRECHNUNG';
export interface FacturXOptions {
    /** The invoice XML (caller-supplied; Forme does not generate or validate it). */
    xml: Uint8Array | string;
    /** Factur-X profile — drives XMP `fx:ConformanceLevel` and the default `/AFRelationship`. */
    profile: FacturXProfile;
    /** Attachment filename; default `factur-x.xml` (`xrechnung.xml` for XRECHNUNG). */
    filename?: string;
    /** Override the profile-derived `/AFRelationship`. */
    relationship?: AfRelationship;
    /** XMP `fx:Version`; default `1.0`. */
    version?: string;
    /** `/Params /ModDate`; deterministic default. */
    modDate?: string;
}
/**
 * Map `attachments` / `facturX` options onto the serialized document.
 * Shared by the Node, browser, and worker entries.
 */
export declare function applyAttachmentOptions(doc: Record<string, unknown>, options?: {
    attachments?: AttachmentOptions[];
    facturX?: FacturXOptions;
}): void;