Change Object.values to fix node 6

Author: armano2

lib/rules/use-v-on-exact.js

@@ -43,7 +43,9 @@ module.exports = {
               return rv
             }, {})
 
-          const directives = Object.values(groups).filter(item => item.length > 1)
+          const directives = Object.keys(groups).map(key => groups[key])
+          // const directives = Object.values(groups) // Uncomment after node 6 is dropped
+            .filter(item => item.length > 1)
           for (const group of directives) {
             if (group.some(item => item.modifiers.length > 0)) { // check if there are directives with modifiers
               const invalid = group.filter(item => item.modifiers.length === 0)