import { HttpMessage } from "@http4t/core/contract";
import { MessageLens, RoutingResult } from "../lenses";
export declare class IntersectionLens<TMessage extends HttpMessage, A extends object | undefined, B extends object | undefined> implements MessageLens<TMessage, A & B> {
    private readonly a;
    private readonly b;
    private readonly unintersectA;
    private readonly unintersectB;
    constructor(a: MessageLens<TMessage, A>, b: MessageLens<TMessage, B>, unintersectA: (intersected: A & B) => Promise<A> | A, unintersectB: (intersected: A & B) => Promise<B> | B);
    get(message: TMessage): Promise<RoutingResult<A & B>>;
    set<SetInto extends TMessage>(into: SetInto, value: A & B): Promise<SetInto>;
}
export declare function intersect<TMessage extends HttpMessage, A extends object | undefined>(a: MessageLens<TMessage, A>, b: MessageLens<TMessage, undefined>): MessageLens<TMessage, A>;
export declare function intersect<TMessage extends HttpMessage, B extends object | undefined>(a: MessageLens<TMessage, undefined>, b: MessageLens<TMessage, B>): MessageLens<TMessage, B>;
export declare function intersect<TMessage extends HttpMessage, A extends object | undefined, B extends object | undefined>(a: MessageLens<TMessage, A>, b: MessageLens<TMessage, B>, unintersectA: (intersected: A & B) => Promise<A> | A, unintersectB: (intersected: A & B) => Promise<B> | B): MessageLens<TMessage, A & B>;
//# sourceMappingURL=IntersectionLens.d.ts.map