import type * as unifont from 'unifont';
import type { FontFileIdGenerator, Hasher } from '../definitions.js';
import type { Defaults, FontFileById, PreloadData, ResolvedFontFamily } from '../types.js';
import type { CollectedFontForMetrics } from './optimize-fallbacks.js';
export declare function collectFontAssetsFromFaces({ fonts, fontFileIdGenerator, family, fontFilesIds, collectedFontsIds, hasher, defaults, }: {
    fonts: Array<unifont.FontFaceData>;
    fontFileIdGenerator: FontFileIdGenerator;
    family: Pick<ResolvedFontFamily, 'cssVariable' | 'fallbacks'>;
    fontFilesIds: Set<string>;
    collectedFontsIds: Set<string>;
    hasher: Hasher;
    defaults: Pick<Defaults, 'fallbacks'>;
}): {
    fontFileById: FontFileById;
    preloads: PreloadData[];
    collectedFontsForMetricsByUniqueKey: Map<string, CollectedFontForMetrics>;
};