Update .babelrc.js

* add `bugfixes: true` which will be the default in Babel 8.x

.babelrc.js

@@ -4,6 +4,7 @@ module.exports = {
       '@babel/preset-env',
       {
         loose: true,
+        bugfixes: true,
         modules: false,
         exclude: ['transform-typeof-symbol']
       }