export type ComparisonProcessOptions = {
    command: string;
    args: string[];
    cwd: string;
    phase: string;
    signal?: AbortSignal;
    env?: NodeJS.ProcessEnv;
    logPath?: string;
    inheritStdin?: boolean;
    inheritOutput?: boolean;
    input?: string;
    allowedExitCodes?: number[];
};
export type ComparisonProcessResult = {
    stdout: string;
    stderr: string;
    exitCode: number;
};
export declare function comparisonAbortError(): Error;
export declare function checkComparisonAbort(signal?: AbortSignal): void;
/** Run in a separate process group so cancelling also stops Metro/install children. */
export declare function runComparisonProcess({ command, args, cwd, phase, signal, env, logPath, inheritStdin, inheritOutput, input, allowedExitCodes, }: ComparisonProcessOptions): Promise<ComparisonProcessResult>;