export interface ProcessResult {
    exitCode: number;
    stdout: string;
    stderr: string;
}
/**
 * Spawn a child process and stream its stdout line-by-line via a callback.
 * Used by the Haskell hie-reader which outputs NDJSON.
 */
export declare function spawnAndStreamLines(command: string, args: string[], onLine: (line: string) => void): Promise<number>;
/**
 * Run a command and capture all output.
 */
export declare function exec(command: string, args: string[]): Promise<ProcessResult>;
//# sourceMappingURL=process.d.ts.map