Function _execute

_execute(source: string, language: string): Promise<any>
Low-level execution entry point used by the higher-level helpers. Prefer applescript() or javascript() over calling this directly.
Parameters
- source: string
  The script source code.
- language: string
  The OSA language name — must be "AppleScript" or "JavaScript".
Returns Promise<any>
A Promise resolving to { success, result, raw }.