research: evaluate moejs extension compatibility and performance

experiments/moejs/cmd/engine-size/goja.go

@@ -0,0 +1,22 @@
+//go:build !moejs
+
+package main
+
+import (
+	"fmt"
+	"github.com/dop251/goja"
+	"os"
+)
+
+func main() {
+	source := "1+1"
+	if len(os.Args) > 1 {
+		source = os.Args[1]
+	}
+	rt := goja.New()
+	v, e := rt.RunString(source)
+	if e != nil {
+		panic(e)
+	}
+	fmt.Println(v.Export())
+}

experiments/moejs/cmd/engine-size/moejs.go

@@ -0,0 +1,30 @@
+//go:build moejs
+
+package main
+
+import (
+	"fmt"
+	"github.com/MoeForge/moejs"
+	"os"
+)
+
+func main() {
+	source := "1+1"
+	if len(os.Args) > 1 {
+		source = os.Args[1]
+	}
+	rt := moejs.NewRuntime(moejs.Options{MutableIntrinsics: true})
+	script, e := moejs.CompileScript("size", source)
+	if e != nil {
+		panic(e)
+	}
+	v, e := rt.RunScript(script)
+	if e != nil {
+		panic(e)
+	}
+	out, e := rt.ToGo(v)
+	if e != nil {
+		panic(e)
+	}
+	fmt.Println(out)
+}