Replace instanceof with safe alternative

Author: leshakoss

src/locale/_lib/buildMatchFn/index.js

@@ -15,7 +15,7 @@ export default function buildMatchFn (args) {
     var parsePatterns = (width && args.parsePatterns[width]) || args.parsePatterns[args.defaultParseWidth]
 
     var value
-    if (parsePatterns instanceof Array) {
+    if (Object.prototype.toString.call(parsePatterns) === '[object Array]') {
       value = parsePatterns.findIndex(function (pattern) {
         return pattern.test(string)
       })

src/toDate/index.js

@@ -101,9 +101,9 @@ export default function toDate (argument, dirtyOptions) {
   if (argument instanceof Date) {
     // Prevent the date to lose the milliseconds when passed to new Date() in IE10
     return new Date(argument.getTime())
-  } else if (typeof argument === 'number' || argument instanceof Number) {
+  } else if (typeof argument === 'number' || Object.prototype.toString.call(argument) === '[object Number]') {
     return new Date(argument)
-  } else if (!(typeof argument === 'string' || argument instanceof String)) {
+  } else if (!(typeof argument === 'string' || Object.prototype.toString.call(argument) === '[object String]')) {
     return new Date(NaN)
   }