import type { RpcExtensionUIResponse } from "./rpc-types.ts";
export declare function isRpcInterruptCommand(type: string): boolean;
export declare function isRpcExtensionUIResponse(value: unknown): value is RpcExtensionUIResponse;
/**
 * Control frames must remain reachable while an ordinary RPC command is
 * pending. Interrupts cancel or adjust queued work for that command, while
 * host responses can unblock UI work awaited by it. Everything else stays on
 * the ordered command lane.
 */
export declare function isConcurrentRpcControlLine(line: string): boolean;
/**
 * Runs ordinary RPC input one frame at a time while giving validated control
 * frames and independently correlated bash executions a concurrent lane. The
 * first ordinary frame starts synchronously, so a following interrupt cannot
 * overtake initialization of the operation it is intended to cancel.
 */
export declare function createRpcInputScheduler(handleLine: (line: string) => Promise<void>): (line: string) => void;
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