部署 Gulp 要执行多久？

~/phphub/ # gulp
[09:36:37] Using gulpfile /usr/local/webserver/nginx/html/phphub/Gulpfile.js
[09:36:37] Starting 'css'...
[09:36:37] Starting 'js'...
[09:36:38] Finished 'css' after 972 ms
[09:36:41] Finished 'js' after 4.78 s
[09:36:41] Starting 'build'...
[09:36:41] Finished 'build' after 12 μs
[09:36:41] Starting 'watch'...
[09:36:41] Finished 'watch' after 33 ms
[09:36:41] Starting 'default'...
[09:36:41] Finished 'default' after 12 μs

到现在已经 6 个小时了，还停留在这个阶段，没有完成退出

求解，谢谢