react.go

package main

// reactWrapper fix issues with dynamic routes created
// in `react-router` so we don't get a 404 page.
//
// usage: http.Handle("/", reactWrapper(http.FileServer("path/to/public")))
func reactWrapper(fs http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		staticIndex := strings.Index(req.URL.Path, "/static/")

		if staticIndex == -1 {
			fsHandler := http.StripPrefix(req.URL.Path, fs)
			fsHandler.ServeHTTP(w, req)
		} else {
			fs.ServeHTTP(w, req)
		}
	})
}