Pass a JS Script to C#?

Hello, I need help to pass this script to C # To add the recharge time to my weapon because in JavaScript you can not according to all, I do not know how to pass it or if there is any way to do the recharge time in JS, but I always they say it's in C #, does anyone know anything? Thank you.

 #pragma strict
 
 var Bullet : Rigidbody; //Municion.
 var BulletSpeed : float; //Velocidad del disparo.
 var ClipAmmo : int; //Cantidad de municion en el cargador.
 var TotalAmmo : int; //Cantidad de balas totales del jugador.
 var ReloadAmmo : int; //Cantidad de balas que se recargan.
 var CanShoot : boolean = true; //Habilidad de disparar.
 var ShootTime : float;
 
 function Update () 
 
 //Seccion de el control de disparo.
 {
 if(Input.GetButtonDown("Fire1")){
 {     
 if (ClipAmmo > 0) //Solo puedes disparar cuando tienes MAS de 0 de municion.
 {
  CanShoot = false;
  var Bullet : Rigidbody = Instantiate(Bullet, transform.position, transform.rotation);
  Bullet.velocity = transform.forward * BulletSpeed;
  yield WaitForSeconds(ShootTime); //Tiempo de espera antes de cada disparo.
  CanShoot = true;
 TotalAmmo--; 
 ClipAmmo--;
 }
 else 
 {
 }
 }
 }
 }
 //Seccion de el control de recarga.
 
 
 function LateUpdate () 
 {
 if(CanShoot)
 {
 Update();  
  if(TotalAmmo >0){
  if(Input.GetKeyDown(KeyCode.R)){ 
  if(ReloadAmmo > TotalAmmo){
  ClipAmmo = TotalAmmo;
  }
  else{
  ClipAmmo = ReloadAmmo;
  }
  CanShoot = true;
   }
  }
 }
 }