/**
 * mock-xmlhttprequest v8.4.1
 * (c) 2025 Bertrand Guay-Paquet
 * @license MIT
 */

/**
 * HTTP header container
 */
export default class HeadersContainer {
    private _headers;
    /**
     * @param headers Initial headers
     */
    constructor(headers?: Record<string, string> | null);
    constructor(src: HeadersContainer);
    /**
     * Reset the container to its empty state.
     *
     * @returns this
     */
    reset(): this;
    /**
     * @param name Header name (case insensitive)
     * @returns Header value or null
     */
    getHeader(name: string): string | null;
    /**
     * Get all headers as a string. Each header is on its own line. All header names are lower-case.
     *
     * @returns Concatenated headers
     */
    getAll(): string;
    /**
     * @returns All headers as an object. The header names are in lower-case.
     */
    getHash(): Record<string, string>;
    /**
     * Add a header value, combining it with any previous value for the same header name.
     *
     * @param name Header name
     * @param value Header value
     * @returns this
     */
    addHeader(name: string, value: string): this;
}