import { OpcPackage } from '../core/opc/index.js';
import { FontRegistry } from '../core/font/index.js';
type EmbedVariant = 'regular' | 'bold' | 'italic' | 'boldItalic';
interface EmbedRef {
    readonly rId: string;
    readonly fontKey: string;
}
interface FontTableEntry {
    readonly name: string;
    readonly embeds: Partial<Record<EmbedVariant, EmbedRef>>;
}
/**
 * §17.8.1 — restore an obfuscated embedded font by XOR-ing its first 32 bytes
 * with the `fontKey` GUID bytes in reverse order, recovering a normal sfnt.
 *
 * @param data    The obfuscated `.odttf` bytes.
 * @param fontKey The 16-byte `w:fontKey` GUID (with or without braces/dashes).
 * @returns The de-obfuscated bytes, or `data` unchanged when `fontKey` is not a GUID.
 */
export declare function deobfuscateEmbeddedFont(data: Uint8Array, fontKey: string): Uint8Array;
/**
 * Parse `word/fontTable.xml` for its embedded-font references (§17.8). Returns
 * one `FontTableEntry` per `w:font` that carries at least one `w:embed*` child,
 * each naming the relationship id + `w:fontKey` for a Regular/Bold/Italic/
 * BoldItalic face. A regex pass, not a full XML parse — only the embed refs matter.
 */
export declare function parseFontTable(data: Uint8Array): Array<FontTableEntry>;
/**
 * De-obfuscate and load every embedded font in the package, building one
 * {@link FontRegistry} per font keyed by its normalized (trimmed, lower-cased)
 * name so a run's `w:ascii` can match it. Each candidate face is validated
 * against the sfnt signature; a font lacking a usable Regular face, or whose
 * faces fail to parse, is skipped (the family then falls back to substitution).
 *
 * @param pkg The opened OPC package for the `.docx`.
 * @returns A map from normalized font name to its registry (empty when nothing embeds).
 */
export declare function loadEmbeddedFonts(pkg: OpcPackage): Map<string, FontRegistry>;
export {};