Update the Mongoose dependencies

index.js

@@ -1,50 +1,40 @@
-'use strict';
-var mongoose = require('mongoose');
-var util = require('util');
+const mongoose = require('mongoose');
+const util = require('util');
 
-module.exports.loadType = function(mongoose) {
-  mongoose.Types.Currency = mongoose.SchemaTypes.Currency = Currency;
-  return Currency;
-};
+const REGEX_FIND_DIGITS_AND_DOT = /\d*\.\d{1,2}/;
+const REGEX_FIND_COMMAS_AND_LETTERS = /\,+|[a-zA-Z]+/g;
+const REGEX_FIND_NEGATIVE = /^-/;
 
 function Currency(path, options) {
-  mongoose.SchemaTypes.Number.call(this, path, options);
+  mongoose
+    .SchemaTypes
+    .Number
+    .call(this, path, options);
 }
 
 /*!
  * inherits
  */
-
 util.inherits(Currency, mongoose.SchemaTypes.Number);
 
 Currency.prototype.cast = function(val) {
-  if ( isType('String', val) ) {
-    var currencyAsString = val.toString();
-    var findDigitsAndDotRegex = /\d*\.\d{1,2}/;
-    var findCommasAndLettersRegex = /\,+|[a-zA-Z]+/g;
-    var findNegativeRegex = /^-/;
-    var currency;
-    currencyAsString = currencyAsString.replace(findCommasAndLettersRegex, "");
-    currency = findDigitsAndDotRegex.exec(currencyAsString + ".0")[0]; // Adds .0 so it works with whole numbers
-    if ( findNegativeRegex.test(currencyAsString) ) {
+  if (typeof val === 'string') {
+    let currencyAsString = val.toString();
+    currencyAsString = currencyAsString.replace(REGEX_FIND_COMMAS_AND_LETTERS, "");
+    const currency = REGEX_FIND_DIGITS_AND_DOT.exec(currencyAsString + ".0")[0]; // Adds .0 so it works with whole numbers
+    if (REGEX_FIND_NEGATIVE.test(currencyAsString)) {
       return (currency * -100).toFixed(0) * 1;
-    } else{
+    } else {
       return (currency * 100).toFixed(0) * 1;
     }
-  } else if ( isType('Number', val) ) {
+  } else if (typeof val === 'number') {
     return val.toFixed(0) * 1;
   } else {
     return new Error('Should pass in a number or string');
   }
 };
 
-/**
- * isType(type, obj)
- * Supported types: 'Function', 'String', 'Number', 'Date', 'RegExp',
- * 'Arguments'
- * source: https://github.com/jashkenas/underscore/blob/1.5.2/underscore.js#L996
- */
-
-function isType(type, obj) {
-  return Object.prototype.toString.call(obj) == '[object ' + type + ']';
+module.exports.loadType = function(mongoose) {
+  mongoose.Types.Currency = mongoose.SchemaTypes.Currency = Currency;
+  return Currency;
 }