import { execSync, spawnSync } from "node:child_process";
export declare const EXEC_TIMEOUT_MS = 120000;
export declare const EXEC_MAX_BUFFER: number;
export declare let _exec: typeof execSync;
export declare let _spawn: typeof spawnSync;
/** Override the exec/spawn implementations (test helper). */
export declare function _setExec(e: typeof execSync, s?: typeof spawnSync): void;
/** Reset to the real child_process implementations. */
export declare function _resetExec(): void;
/** Single-quote a string for safe use in a `gh`/shell command line. Exported so
 * callers (e.g. pr.ts) don't re-roll their own quoting. */
export declare function shellQuote(s: string): string;
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