fix: Validator groups enlargement, number validation rule

src/validation/rules.ts

@@ -225,7 +225,7 @@ export default {
      * Rule: checks if the value is only alpha numeric
      */
     number ({ value }: { value: any }): Promise<boolean> {
-        return Promise.resolve(!isNaN(Number(value)))
+        return Promise.resolve(String(value).length > 0 && !isNaN(Number(value)))
     },
 
     /**

src/validation/validator.ts

@@ -68,7 +68,7 @@ export function createValidatorGroups (rules: [ValidationRule, any[], string, st
             bail: true,
         })))
     } else {
-        groups.push(...rules.map(mapper))
+        groups.push(...enlarge(rules.map(mapper)))
     }
 
     return groups