type HeaderBuffer = Record<string, {
    normalCase: string;
    values: string[];
}>;
/**
 * HTTP header class.
 */
export declare class Headers {
    _headers?: HeaderBuffer;
    _init: string[];
    constructor(init?: string[]);
    /**
     * Append header value.
     */
    append(name: string, value: string): this;
    /**
     * Clone headers.
     */
    clone(): Headers;
    /**
     * Remove hop-by-hop headers that should not be retransmitted.
     */
    dehop(): this;
    /**
     * Get header value.
     */
    get(name: string): string | null;
    /**
     * Get all headers values individually.
     */
    getAll(name: string): string[];
    /**
     * Get web links from `Link` header according to RFC5988.
     * @link http://tools.ietf.org/html/rfc5988
     * @example
     * // Extract information about next page
     * const {link, title} = headers.getLinks().next;
     */
    getLinks(): Record<string, Record<string, string>>;
    /**
     * Remove header.
     */
    remove(name: string): this;
    /**
     * Set header value.
     */
    set(name: string, value: string): this;
    /**
     * Set web links to `Link` header according to RFC5988.
     * @link http://tools.ietf.org/html/rfc5988
     * @example
     * // Link to next and previous page
     * headers.setLinks({next: 'http://example.com/foo', prev: 'http://example.com/bar'});
     */
    setLinks(links: Record<string, string>): this;
    /**
     * Convert headers into a plain array of name/value pairs.
     */
    toArray(): string[];
    /**
     * Convert headers into a plain object.
     */
    toObject(): Record<string, string>;
    /**
     * Convert headers to string.
     */
    toString(): string;
    _getHeaders(): HeaderBuffer;
}
export {};