add normal HTTP server listener for debugging purposes

handler.go

@@ -1,3 +1,5 @@
+//go:build js && wasm
+
 package workers
 
 import (
@@ -85,7 +87,7 @@ func handleRequest(reqObj js.Value) (js.Value, error) {
 //go:wasmimport workers ready
 func ready()
 
-// Server serves http.Handler on Cloudflare Workers.
+// Server serves http.Handler on a JS runtime.
 // if the given handler is nil, http.DefaultServeMux will be used.
 func Serve(handler http.Handler) {
  if handler == nil {

handler_without_js.go

@@ -0,0 +1,27 @@
+//go:build !js
+
+package workers
+
+import (
+ "fmt"
+ "net/http"
+ "os"
+)
+
+// Server serves http.Handler as a normal HTTP server.
+// if the given handler is nil, http.DefaultServeMux will be used.
+// As a port number, PORT environment variable or default value (9900) is used.
+// This function is implemented for non-JS environments for debugging purposes.
+func Serve(handler http.Handler) {
+ if handler == nil {
+ handler = http.DefaultServeMux
+ }
+ port := os.Getenv("PORT")
+ if port == "" {
+ port = "9900"
+ }
+ addr := fmt.Sprintf(":%s", port)
+ fmt.Printf("listening on: http://localhost%s\n", addr)
+ fmt.Fprintln(os.Stderr, "warn: this server is currently running in non-JS mode. to enable JS-related features, please use the make command in the syumai/workers template.")
+ http.ListenAndServe(addr, handler)
+}