Polyfills for V8Go
Install
go get -u go.kuoruan.net/v8go-polyfillsThis module uses Golang embed, so requires Go version 1.16
Polyfill List
-
base64:
atobandbtoa -
console:
console.log -
fetch:
fetch -
timers:
setTimeout,clearTimeout,setIntervalandclearInterval -
url:
URLandURLSearchParams
Usage
fetch polyfill
package main
import (
"errors"
"fmt"
"time"
"go.kuoruan.net/v8go-polyfills/fetch"
"rogchap.com/v8go"
)
func main() {
iso, _ := v8go.NewIsolate()
global, _ := v8go.NewObjectTemplate(iso)
if err := fetch.InjectTo(iso, global); err != nil {
panic(err)
}
ctx, _ := v8go.NewContext(iso, global)
val, err := ctx.RunScript("fetch('https://www.example.com').then(res => res.text())", "fetch.js")
if err != nil {
panic(err)
}
proms, err := val.AsPromise()
if err != nil {
panic(err)
}
done := make(chan bool, 1)
go func() {
for proms.State() == v8go.Pending {
continue
}
done <- true
}()
select {
case <-time.After(time.Second * 10):
panic(errors.New("request timeout"))
case <-done:
html := proms.Result().String()
fmt.Println(html)
}
}