/**
 * Runtime pieces of the channel bus that are not the contract itself.
 *
 * The interface, the frame shape and the implementer's contract live in
 * `@rebasepro/types` (`types/channel_bus.ts`), so a transport shipped as its own
 * package — a Redis one, say — depends on the contract and not on this database
 * adapter. They are re-exported here for convenience: code already importing
 * from the adapter should not have to know where the types are declared.
 */
import type { ChannelBusFrame } from "@rebasepro/types";
export type { ChannelBus, ChannelBusFrame, ChannelBusHandler, ChannelBusConfig, ChannelBusSetting } from "@rebasepro/types";
export { isChannelBusInstance } from "@rebasepro/types";
/**
 * The default: no cross-instance delivery at all.
 *
 * This is what every deployment ran before the bus existed, and what a
 * single-instance deployment should keep running — `publish` resolves without
 * touching the network, so the broadcast path is the same handful of `ws.send`
 * calls it always was.
 */
export declare class MemoryChannelBus {
    readonly kind: "memory";
    readonly maxFrameBytes: number;
    start(): Promise<void>;
    publish(): Promise<void>;
    stop(): Promise<void>;
}
/** Encoded size of a frame, for a transport's size check. */
export declare function frameByteLength(frame: ChannelBusFrame): number;