title: when I resolve url() in css, my webpack won't reload when the file changed
body: <p>I wrote my custom loader to resolve <code>url()</code> by webpack, I use <code>loaderContext.resolve</code> to resolve it. However, when I changed the stylesheet file, my webpack wont recompile, but after I remove all dependencies and re-add dependencies, it works, it will do recompile as I expected. Its that anything wrong I have did?</p>