import { spawn } from "node:child_process";
import type { StructuredExecHost } from "./structured-exec-host.js";
import type { StructuredRunnerAdapter, StructuredRunnerContext, StructuredRunnerExecution, StructuredRunnerObserver, StructuredRunnerTurnState } from "./structured-runner.js";
import type { SessionSnapshot } from "./types.js";
export type OpenCodeTurnState = StructuredRunnerTurnState;
export declare function buildOpenCodeArgs(session: SessionSnapshot): string[];
/** Apply one OpenCode NDJSON event to the current transport-neutral turn state. */
export declare function applyOpenCodeEvent(turnState: OpenCodeTurnState, event: Record<string, unknown>, createId?: () => string): string | null;
/** Production adapter for the external `opencode run --format json` process. */
export declare class OpenCodeRunner implements StructuredRunnerAdapter {
    private readonly spawnProcess;
    private readonly execHost?;
    constructor(spawnProcess?: typeof spawn, execHost?: StructuredExecHost | undefined);
    start(context: StructuredRunnerContext, observer: StructuredRunnerObserver): StructuredRunnerExecution;
}