requested change 2

Author: aditi-khare-mongoDB

lib/cast/double.js

@@ -2,6 +2,7 @@
 
 const assert = require('assert');
 const BSON = require('bson');
+const isBsonType = require('../helpers/isBsonType');
 
 /**
  * Given a value, cast it to a IEEE 754-2008 floating point, or throw an `Error` if the value
@@ -19,7 +20,7 @@ module.exports = function castDouble(val) {
   }
 
   let coercedVal;
-  if (val instanceof BSON.Long) {
+  if (isBsonType(val, 'Long')) {
     coercedVal = val.toNumber();
   } else if (typeof val === 'string') {
     try {

lib/helpers/clone.js

@@ -32,7 +32,7 @@ function clone(obj, options, isArrayChild) {
     return obj;
   }
 
-  if (obj._bsontype === 'Double') {
+  if (isBsonType(obj, 'Double')) {
     return new BSON.Double(obj.value);
   }
   if (typeof obj === 'number' || typeof obj === 'string' || typeof obj === 'boolean' || typeof obj === 'bigint') {