Node-Sass |除非我手动删除css文件，否则不重新编译

I am just starting out using node-sass. I have it to the point where I request style.css. If I have no style.css in my stylesheets directory then it compiles it for me, however once it compiles then it will not update/recompile changes until I delete the css files manually.I am just starting out using node-sass. I have