/**
 * One fresh `cline --json` turn (no session yet): stream its NDJSON as
 * normalized events, enforce max turns, and recover the session id.
 *
 * Invocation: `cline --json --act --auto-approve true -c <cwd>
 *   [--config <dir> --data-dir <dir>] [-P <provider>] [-m <model>]
 *   [--thinking <level>] "Complete the task below."` with the prompt on a
 *   FIFO stdin (cline-runner-proc.ts). Never `-y/--yolo`: it narrows the
 *   toolset. `--act` and `--auto-approve true` pin act mode and approvals
 *   even when the user's persisted cline settings say plan / ask — a
 *   headless turn has nobody to answer an approval. A scoped turn passes
 *   `--auto-approve false` instead and refuses what needs approval
 *   (cline-runner-scoped.ts).
 * Provider: `CLINE_PROVIDER` from the turn env (the variable cline's ACP
 *   mode reads natively) becomes `-P`; unset leaves cline's last-used one.
 * Max turns: cline has no iteration flag (only loop detection and
 *   `--retries`), so the runner counts top-level `iteration_start` events
 *   and, past `maxTurns`, kills the turn: SIGTERM, then SIGKILL after
 *   MAX_TURNS_KILL_GRACE_MS. Verified live (3.0.65, OpenRouter): neither
 *   SIGTERM nor SIGINT stops a --json run — cline finishes every remaining
 *   iteration and only then exits — so the SIGKILL is what enforces the cap.
 *   Usage then comes from the last `usage` event's running totals.
 * Session id: not in the stream; read from `cline history --json` after the
 *   process exits (matching cwd + prompt, then pid).
 */
import type { AgentRunArgs } from './agent-runner.js';
import { type ClineSetup } from './cline-runner-host.js';
import type { ClineEvent, ClineHost, ClineTurnOutcome } from './cline-runner-types.js';
import type { OrgEffortLevel } from './cost-tier.js';
/** `cline --thinking`: none|low|medium|high|xhigh (max clamps to xhigh). */
/** How long cline gets to exit on SIGTERM once past max turns. */
export declare const MAX_TURNS_KILL_GRACE_MS = 1500;
export declare const CLINE_THINKING: Record<OrgEffortLevel, string>;
export declare function jsonTurnArgs(setup: ClineSetup, args: AgentRunArgs): string[];
export declare function streamJsonTurn(setup: ClineSetup, prompt: string, args: AgentRunArgs, host: ClineHost, outcome: ClineTurnOutcome): AsyncGenerator<ClineEvent>;
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