By using this package you can serve static files with 404 Error fallback to custom http.handler.
For example if you want to serve static contents of a Single Page Application, you can always serve index.html when 404 error occurs.
Example:
func main() {
port := os.Getenv("PORT")
if port == "" {
log.Panic("$PORT should not be empty")
}
h := sfs.New(http.Dir("client/build"), IndexHandler)
log.Fatal(http.ListenAndServe(":"+port, h))
}
func IndexHandler(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, "client/build/index.html")
}