Go failed to call JavaScript function because the buffer was introduced into JavaScript code

secret.js

import Buffer from 'buffer'

var Q = function(e) {
    return new Buffer("asdfl")
};

main.go

func main() {
    jsFile := "./secret.js"
    bytes, err := ioutil.ReadFile(jsFile)
    if err != nil {
        panic(err)
    }

    vm := otto.New()
    _, err = vm.Run(string(bytes))
    if err != nil {
        panic(err)
    }
    enc, err := vm.Call("Q", nil, "123456")
    if err != nil {
        panic(err)
    }
    fmt.Println(enc.String())
}

error tips

(anonymous): Line 1:1 Unexpected reserved word