import type * as unifont from 'unifont';
import type { CollectedFontForMetrics } from './logic/optimize-fallbacks.js';
import type { AstroFontProvider, FontFileData, FontType, PreloadData, ResolvedFontProvider } from './types.js';
import type { FontFaceMetrics, GenericFallbackName } from './types.js';
export interface Hasher {
    hashString: (input: string) => string;
    hashObject: (input: Record<string, any>) => string;
}
export interface RemoteFontProviderModResolver {
    resolve: (id: string) => Promise<any>;
}
export interface RemoteFontProviderResolver {
    resolve: (provider: AstroFontProvider) => Promise<ResolvedFontProvider>;
}
export interface LocalProviderUrlResolver {
    resolve: (input: string) => string;
}
type SingleErrorInput<TType extends string, TData extends Record<string, any>> = {
    type: TType;
    data: TData;
    cause: unknown;
};
export type ErrorHandlerInput = SingleErrorInput<'cannot-load-font-provider', {
    entrypoint: string;
}> | SingleErrorInput<'unknown-fs-error', {}> | SingleErrorInput<'cannot-fetch-font-file', {
    url: string;
}> | SingleErrorInput<'cannot-extract-font-type', {
    url: string;
}>;
export interface ErrorHandler {
    handle: (input: ErrorHandlerInput) => Error;
}
export interface UrlProxy {
    proxy: (input: Pick<FontFileData, 'url' | 'init'> & {
        collectPreload: boolean;
        data: Partial<unifont.FontFaceData>;
    }) => string;
}
export interface UrlProxyContentResolver {
    resolve: (url: string) => string;
}
export interface DataCollector {
    collect: (input: FontFileData & {
        data: Partial<unifont.FontFaceData>;
        preload: PreloadData | null;
    }) => void;
}
export type CssProperties = Record<string, string | undefined>;
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 {};