export type HttpHeaders = {
    [key: string]: string;
};
/**
 * Remove IgnoreParams from URL
 * Default: ts (timestamp) assumed different for each request
 * @param url
 * @returns
 */
export declare function normalizeUrl(url: string | URL): URL;
/**
 * Convert URL to content file path
 * For example:
 * https://example.com/foo/bar.html?hoge=123 -> example.com/foo/bar~hoge=123.html
 * - Add directory index (index.html) if URL ends with slash
 * - Shorten too long basename with short hash
 * - Ignore dynamic params for example: ts=123
 * @param url
 * @returns
 */
export declare function requestContentFilePath(method: string, url: string | URL): string;
export declare function parseContentTypeHeader(contentType: string): {
    mime: string;
    charset: string;
};
export declare function stringifyContentTypeHeader(mime?: string, charset?: string, original?: string): string;