import { Loss } from '../core/ir/index.js';
import { OpcPackage } from '../core/opc/index.js';
import { PoNode } from '../core/po-helpers.js';
import { FontRegistry } from '../core/font/index.js';
/** What an `fntdata` part turned out to hold. */
type FaceBytes = {
    readonly kind: 'font';
    readonly bytes: Uint8Array;
} | {
    readonly kind: 'compressed';
} | {
    readonly kind: 'unreadable';
};
/**
 * Read one `fntdata` part: the font itself when the container stores it
 * plainly, and what stopped it otherwise.
 *
 * @param data The part's bytes.
 */
export declare function readFntData(data: Uint8Array): FaceBytes;
/**
 * §19.2.1.13 — the fonts a deck embeds, by normalized family name.
 *
 * @param pkg      The opened `.pptx` package.
 * @param presPath The presentation part's path (relationships resolve from it).
 * @param pres     Its parsed `p:presentation` element.
 * @param onLoss   Where a face that cannot be unpacked records itself.
 * @returns The families whose faces were readable (empty when none were).
 */
export declare function loadPptxEmbeddedFonts(pkg: OpcPackage, presPath: string, pres: PoNode | undefined, onLoss: (loss: Loss) => void): Map<string, FontRegistry>;
export {};