import { FinishedUnaryCall, UnaryCall } from '@protobuf-ts/runtime-rpc';
import { Error as SfuError } from '../gen/video/sfu/models/models';
import type { RpcInvocationMeta } from './types';
/**
 * An internal interface which asserts that "retryable" SFU responses
 * contain a field called "error".
 * Ideally, this should be coming from the Protobuf definitions.
 */
export interface SfuResponseWithError {
    /**
     * An optional error field which should be present in all SFU responses.
     */
    error?: SfuError;
}
/**
 * Creates a closure which wraps the given RPC call and retries invoking
 * the RPC until it succeeds or the maximum number of retries is reached.
 *
 * For each retry, there would be a delay to avoid request bursts toward the SFU.
 *
 * @param rpc the closure around the RPC call to execute.
 * @param signal the signal to abort the RPC call and retries loop.
 * @param maxRetries the maximum number of retries to perform. Defaults to `Number.POSITIVE_INFINITY`.
 */
export declare const retryable: <I extends object, O extends SfuResponseWithError>(rpc: (invocationMeta: RpcInvocationMeta) => UnaryCall<I, O>, signal?: AbortSignal, maxRetries?: number) => Promise<FinishedUnaryCall<I, O>>;