import type { WireContext, WireMiddleware } from './host.js';
/**
 * Koa-style middleware composer. Returns a dispatcher that runs every
 * middleware and then `terminator` (the "real" wire send/receive). If any
 * middleware does not call `next`, the frame is dropped and `terminator`
 * never runs.
 *
 * Throws if `next` is called more than once within the same middleware (Koa
 * semantics), which catches a common middleware bug.
 */
export declare function composeWireMiddleware(middlewares: WireMiddleware[], terminator: (ctx: WireContext) => void | Promise<void>): (ctx: WireContext) => Promise<void>;
/** Normalize host.wireMiddleware (single fn / array / undefined) into an array. */
export declare function normalizeWireMiddleware(value: WireMiddleware | WireMiddleware[] | undefined): WireMiddleware[];