import { ServerResponse, IncomingHttpHeaders } from 'http';
import { Http2ServerResponse } from 'http2';
import { Status } from '../model';
/**
 * A handier wrapper around a server response
 *
 * @public
 */
export interface IResponse {
    /**
     * The original Node.js object representing the response
     */
    readonly original: ServerResponse | Http2ServerResponse;
    /**
     * An object `{code, message}`, where each property is optional.
     * If `code` is never given, a default value of `200` is applied.
     */
    status: Partial<Readonly<Status>> | null;
    /**
     * Whether the {@link IResponse.body|body} field should be serialized into JSON (and `content-type` header should be set to `application/json`).
     *
     * @remarks
     * When not explicitly set, the returned value will still be true
     * if the `body` value is not a string, not a `Buffer`, and not `null` either.
     */
    json: boolean;
    /**
     * The body of the response.
     *
     * @remarks
     * If `json` is explicitly set to `true`, it will be serialized into JSON (and `content-type` header will be set to `application/json`).
     * It will also be if `json` is not explicitly set but the `body` value is not a string, not a `Buffer`, and not `null` either.
     * After that, the result will eventually be converted to a `Buffer` to be sent.
     */
    body: any;
    /**
     * A convenient method to set the {@link IResponse.body|body} value and
     * set {@link IResponse.json|json} to `true`.
     * @param data - json object to use as the response body
     */
    setData(data: any): void;
    /**
     * The currently set headers.
     * Use {@link IResponse.setHeaders|setHeaders} to change them.
     */
    readonly headers: Readonly<IncomingHttpHeaders>;
    /**
     * Merge given `headers` map with the previously set headers (initial set is an empty map).
     * @param headers - Headers to set. Each header value can be a number, a string, or an array of strings. Put a `null` value to suppress a header
     */
    setHeaders(headers?: Readonly<IncomingHttpHeaders>): Readonly<IncomingHttpHeaders>;
    /**
     * Sends the response, applying some data previously specified but not set yet
     */
    send(): Promise<void>;
}