refactor

examples/function-wasm/main.go

@@ -0,0 +1,57 @@
+// +build js,wasm
+
+package main
+
+import (
+	"crypto/rand"
+	"errors"
+	"log"
+	"syscall/js"
+
+	"github.com/vedhavyas/go-wasm/go-converts"
+)
+
+func addition(this js.Value, args []js.Value) interface{} {
+	log.Println("In WASM", args)
+	a, b := args[0].Int(), args[1].Int()
+	return a + b
+}
+
+func multiplier(this js.Value, args []js.Value) interface{} {
+	return 10
+}
+
+func getBytes(this js.Value, args []js.Value) interface{} {
+	r := make([]byte, 32)
+	_, err := rand.Read(r)
+	if err != nil {
+		panic(err)
+	}
+	return js.TypedArrayOf(r)
+}
+
+func getError(this js.Value, args []js.Value) interface{} {
+	err := errors.New("test errors")
+	return err.Error()
+}
+
+func receiveSendBytes(this js.Value, args []js.Value) interface{} {
+	b := args[0]
+	buf := converts.ToBytes(b)
+	return js.TypedArrayOf(buf)
+}
+
+func main() {
+	ch := make(chan bool)
+
+	// register functions
+	js.Global().Set("addition", js.FuncOf(addition))
+	js.Global().Set("multiplier", js.FuncOf(multiplier))
+	js.Global().Set("getBytes", js.FuncOf(getBytes))
+	js.Global().Set("getError", js.FuncOf(getError))
+	js.Global().Set("bytes", js.FuncOf(receiveSendBytes))
+
+	res := js.Global().Get("addProxy").Invoke(1, 2)
+	log.Printf("1 + 2 = %d\n", res.Int())
+	<-ch
+}