/// <reference types="@cloudflare/workers-types" />
import { MimeTypes, PreResponse } from './response';
export interface AssetConfig {
    content_manifest?: any;
    kv_namespace?: KVNamespace;
    path?: string;
    cache_control?: string;
    asset_class?: typeof Assets;
}
export declare class Assets {
    protected readonly path: string;
    protected log: boolean;
    protected readonly prefix: RegExp;
    protected readonly manifest: Record<string, string> | null;
    protected readonly kv_namespace?: KVNamespace;
    protected readonly security_headers: Record<string, string>;
    protected readonly headers: Record<string, string>;
    constructor(config: AssetConfig, security_headers: Record<string, string>, log: boolean);
    is_static_path(pathname: string): boolean;
    response(request: Request, pathname: string): Promise<PreResponse>;
    not_found_error(pathname: string): Error;
    cached_proxy(request: Request, url: string, custom_mime_type?: MimeTypes | null): Promise<PreResponse>;
    protected mime_type(pathname: string): MimeTypes;
}