/**
 * Capability plumbing between structs and the message cap table.
 *
 * Generated code reads/writes interface-typed fields through getInterfaceClient and
 * setInterfaceClient; the connection encodes/decodes the message cap table to and from
 * Payload.capTable separately.
 */
import { Struct } from "../serialization/pointers/struct";
import { Client } from "./client";
import { Server } from "./server";
/** Anything a generated interface-field setter accepts. */
export type ClientLike = Client | Server | {
    client: Client;
};
/** A client whose calls all reject with `reason`. */
export declare function brokenClient(reason: string): Client;
/**
 * The client for the capability at pointer field `index` of `s`. Returns a broken
 * client if the field is null or the cap table has no entry for it.
 */
export declare function getInterfaceClient(index: number, s: Struct): Client;
/** Normalize a generated client wrapper or a Server to a bare Client. */
export declare function normalizeClient(value: ClientLike): Client;
/**
 * Walk a PromisedAnswer transform path from a Payload's content and return the client
 * for the capability at the end of it.
 */
export declare function resolveCapability(payload: Struct, transform: number[]): Client;
/**
 * Store a capability into pointer field `index` of `s`, registering it in the
 * containing message's cap table.
 */
export declare function setInterfaceClient(index: number, value: ClientLike, s: Struct): void;