import { type BashOperations } from '@earendil-works/pi-coding-agent';
import type { ExtensionAPI } from '@earendil-works/pi-coding-agent';
/** Seconds a leading `sleep ...` will block for, or null when the command does
 *  not open with a sleep (or its duration isn't statically knowable). */
export declare function leadingSleepSeconds(command: string): number | null;
/** The valve's BashOperations backend. */
export declare function createValveOperations(nodeId: string, contextDir: string): BashOperations;
export default function (pi: ExtensionAPI): void;