bidirectional communication

simple/caller/main.go

@@ -16,7 +16,7 @@ func main() {
 	init, done := make(chan bool), make(chan error)
 	go b.Run(init, done)
 	<-init
-	res, err := b.CallFunc("printWasm", &[]interface{}{"success call"})
+	res, err := b.CallFunc("printWasm", &[]interface{}{"Hello from Go"})
 	fmt.Println(res, err)
 	err = <-done
 	fmt.Println("wasm exited", err)

simple/prog/main.go

@@ -9,17 +9,16 @@ import (
 
 // TODO: log seems to cause an issue
 func printWasm(this js.Value, v []js.Value) interface{} {
-	fmt.Println("Hello from WASM", v)
-	return nil
+	fmt.Println(v[0].String())
+	return "Hello from WASM"
 }
 
 func main() {
 	ch := make(chan bool)
-	//fmt.Println("WASM Go Initialized")
+	fmt.Println("WASM-Go Initialized")
 
 	// register functions
 	fun := js.FuncOf(printWasm)
 	js.Global().Set("printWasm", fun)
-	//fmt.Println("Done...")
 	<-ch
 }