/** Trimmed stdout/stderr from a child process execution. */
export interface ExecResult {
    stdout: string;
    stderr: string;
}
/**
 * Execute a command as a child process and return its trimmed output.
 * @param cmd - Executable name or path.
 * @param args - Arguments to pass to the executable.
 * @param opts - Optional timeout, cwd, and env overrides.
 */
export declare function exec(cmd: string, args: string[], opts?: {
    timeout?: number;
    cwd?: string;
    env?: NodeJS.ProcessEnv;
}): Promise<ExecResult>;
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