Merge commit 'b872d583e0a6c2ec6ead5d129b7c4abf07033d26'

Author: karol-f

dist/vue-custom-element.esm.js

@@ -155,6 +155,9 @@ function toArray(list) {
 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
 
 function convertAttributeValue(value, overrideType) {
+  if (value === null || value === undefined) {
+    return overrideType === Boolean ? false : undefined;
+  }
   var propsValue = value;
   var isBoolean = ['true', 'false'].indexOf(value) > -1;
   var valueParsed = parseFloat(propsValue, 10);

dist/vue-custom-element.js

@@ -161,6 +161,9 @@ function toArray(list) {
 var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
 
 function convertAttributeValue(value, overrideType) {
+  if (value === null || value === undefined) {
+    return overrideType === Boolean ? false : undefined;
+  }
   var propsValue = value;
   var isBoolean = ['true', 'false'].indexOf(value) > -1;
   var valueParsed = parseFloat(propsValue, 10);