create an v8 isolate in go

To create a V8 isolate in Go, you can use the Go bindings for V8 library by importing the "github.com/dop251/goja" package.

Here's an example code snippet that creates and runs a V8 isolate:

main.go
import (
    "github.com/dop251/goja"
)

func main() {
    isolate := goja.New()

    _, err := isolate.RunString(`
    function add(a, b) {
        return a + b;
    }
    `)
    if err != nil {
        panic(err)
    }

    res, err := isolate.RunString("add(2, 3)")
    if err != nil {
        panic(err)
    }

    fmt.Println(res)
}
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This code creates a new V8 isolate using the New() function of the goja package. Then it executes a JavaScript function definition that defines a function called add that takes two arguments and returns their sum. Finally, the code calls the add function with the values 2 and 3 and prints the result, which should be 5.

Note that V8 isolates are lightweight environments that allow you to execute JavaScript code securely and independently from other V8 isolates. In this example, we're using a single isolate to execute some JavaScript code, but you can create multiple isolates to execute code concurrently and prevent them from interacting with each other.