how to import it ??? about cordova-phone-call-trap HOT 2 OPEN

if (window.PhoneCallTrap) {
  window.PhoneCallTrap.onCall(function (state) {
  
    switch (state) {
      case "RINGING":
        console.log("Phone is ringing");
        break;
      case "OFFHOOK":
        console.log("Phone is off-hook");
        break;    
      case "IDLE":
        console.log("Phone is idle");
        break;
    }
  });
}