import type { ExtensionToolContext } from "@earendil-works/pi-coding-agent";
type ExecuteTool = ExtensionToolContext["executeTool"];
/** Pi retires nested-call IDs when the outer result returns. Drain calls before
 * returning a yield; later calls wait for the next exec/wait observation. */
export declare class PiToolCallScope {
    private accepting;
    private readonly pending;
    private readonly context;
    private readonly signal;
    constructor(context: ExtensionToolContext, signal?: AbortSignal);
    run(...[name, args, options]: Parameters<ExecuteTool>): ReturnType<ExecuteTool> | undefined;
    close(): Promise<void>;
}
export {};