⚡ improvement(errors): error messages order

Fixes #240

Author: kazupon

src/validator.js

@@ -517,6 +517,8 @@ export default class Validator {
       }
     })
 
-    return empty(errors) ? undefined : errors
+    return empty(errors) ? undefined : errors.sort((a, b) => {
+      return (a.field < b.field) ? -1 : 1
+    })
   }
 }

test/specs/errors.js

@@ -125,6 +125,15 @@ describe('errors', () => {
         assert(testMatches(group2Targets, vm.$validation.group2.errors) === 3)
       })
     })
+
+    describe('order', () => {
+      it('should be ascending', () => {
+        for (let i = 0; i < 6; i++) {
+          const name = 'field' + (i + 1).toString()
+          assert(vm.$validation.errors[i].field === name)
+        }
+      })
+    })
   })