import type * as unifont from 'unifont';
import type { CollectedFontForMetrics } from './core/optimize-fallbacks.js';
import type { CssProperties, FontFaceMetrics, FontFileData, FontProvider, FontType, GenericFallbackName, ResolveFontOptions, Style } from './types.js';
export interface Hasher {
    hashString: (input: string) => string;
    hashObject: (input: Record<string, any>) => string;
}
export interface UrlResolver {
    resolve: (id: string) => string;
    readonly cspResources: Array<string>;
}
export interface FontFileContentResolver {
    resolve: (url: string) => string;
}
export interface CssRenderer {
    generateFontFace: (family: string, properties: CssProperties) => string;
    generateCssVariable: (key: string, values: Array<string>) => string;
}
export interface FontMetricsResolver {
    getMetrics: (name: string, font: CollectedFontForMetrics) => Promise<FontFaceMetrics>;
    generateFontFace: (input: {
        metrics: FontFaceMetrics;
        fallbackMetrics: FontFaceMetrics;
        name: string;
        font: string;
        properties: CssProperties;
    }) => string;
}
export interface SystemFallbacksProvider {
    getLocalFonts: (fallback: GenericFallbackName) => Array<string> | null;
    getMetricsForLocalFont: (family: string) => FontFaceMetrics;
}
export interface FontFetcher {
    fetch: (input: FontFileData) => Promise<Buffer>;
}
export interface FontTypeExtractor {
    extract: (url: string) => FontType;
}
export interface FontFileReader {
    extract: (input: {
        family: string;
        url: string;
    }) => {
        weight: string;
        style: Style;
    };
}
export interface FontFileIdGenerator {
    generate: (input: {
        originalUrl: string;
        type: FontType;
        cssVariable: string;
        font: unifont.FontFaceData;
    }) => string;
}
export interface StringMatcher {
    getClosestMatch: (target: string, candidates: Array<string>) => string;
}
export interface Storage {
    getItem: (key: string) => Promise<any | null>;
    getItemRaw: (key: string) => Promise<Buffer | null>;
    setItem: (key: string, value: any) => Promise<void>;
    setItemRaw: (key: string, value: any) => Promise<void>;
}
export interface FontResolver {
    resolveFont: (options: ResolveFontOptions<Record<string, any>> & {
        provider: FontProvider;
    }) => Promise<Array<unifont.FontFaceData>>;
    listFonts: (options: {
        provider: FontProvider;
    }) => Promise<string[] | undefined>;
}