import type { ChildProcess } from "node:child_process";
import type { EngineRunOpts, EngineResult } from "../shared/types.js";
export interface LiveAntigravityProcess {
    proc: ChildProcess;
    terminationReason: string | null;
}
export declare function terminateAntigravityProcessTree(proc: ChildProcess): void;
interface TurnOpts {
    proc: ChildProcess;
    live: LiveAntigravityProcess;
    runOpts: EngineRunOpts;
    prompt: string;
    cleanup: () => void;
}
export declare class AntigravityHeadlessTurn {
    private opts;
    private settled;
    private startedAtMs;
    private lineBuffer;
    private stderr;
    private conversationId;
    private lastContextTokens;
    private hardTimeout;
    private exitGrace;
    private resolveResult;
    private rejectResult;
    constructor(opts: TurnOpts);
    run(): Promise<EngineResult>;
    private attach;
    private onStdout;
    private onStderr;
    private onStdinError;
    private onClose;
    private onExit;
    private onError;
    private onTimeout;
    private handleLine;
    private captureParsedLine;
    private settleTerminal;
    private finalizeNonTerminal;
    /** agy's log names the real cause (usually its print-mode wall); ours names only the exit. */
    private describeMissingResult;
    private settle;
    private cleanup;
}
export {};
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