export declare const HTTP_METHODS: ("GET" | "PUT" | "POST" | "DELETE" | "OPTIONS" | "HEAD" | "PATCH" | "TRACE")[];
export type HTTPMethod = (typeof HTTP_METHODS)[number];
/**
 * The BetterRequest object is an extension of the native [Request](https://developer.mozilla.org/en-US/docs/Web/API/Request)
 * interface, with better typing and extended functionality such as mutable properties
 * though maybe we should allow for immutable requests?
 */
export type BetterRequest<TJson = unknown> = Omit<Request, 'method'> & {
    readonly method: HTTPMethod;
    json: <T = TJson>() => Promise<T>;
};
/**
 * The BetterResponse object is an extension of the native [Response](https://developer.mozilla.org/en-US/docs/Web/API/Response)
 * interface, with better typing and extended functionality.
 */
export type BetterResponse<TJson = unknown> = Omit<Response, 'json'> & {
    json: <T = TJson>() => Promise<T>;
};
/** Heavily inspired by trpc and Apollo GraphQL */
export type Link = (req: BetterRequest, next: (req: BetterRequest | Request) => Promise<Response>) => Promise<BetterResponse>;
export declare function applyLinks(req: BetterRequest | Request, links: Link[]): Promise<BetterResponse>;
/** Compose multiple links into a single link */
export declare function composeLinks(...links: Link[]): Link;
export declare function composeLinksToHandler(...links: Link[]): (req: Request) => Promise<Response>;
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