join - 运行咖啡时出现 ENOSYS 错误 --watch

Question

这在我删除“-w”时有效，但我希望它观察“js/coffee-src”的变化。有什么建议吗？

coffee -w --join js/dripped_coffee.js --compile js/coffee-src/*.coffee

错误信息：

/usr/lib/node_modules/coffee-script/lib/coffee-script/command.js:227
     if (e.code !== 'ENOENT') throw e;
                                 ^
Error: watch ENOSYS
    at errnoException (fs.js:636:11)
    at FSWatcher.start (fs.js:663:11)
    at Object.watch (fs.js:691:11)
    at /usr/lib/node_modules/coffee-script/lib/coffee-script/command.js:232:27
    at Object.oncomplete (/usr/lib/node_modules/coffee-script/lib/coffee-script/command.js:106:25)

谢谢。