feat: Add field config to result object

This should have the same structure as the errors so the code below
should return the configuration value of the offended rule/subrule.

```
_.get(result.config, result.rule);
```

src/__tests__/validator_config_tests.js

@@ -17,8 +17,18 @@ test('Validator should validate required rules', t => {
   });
 
   t.deepEqual(result, {
-    noValue: { field: 'noValue', rule: 'required', value: null },
-    notInObject: { field: 'notInObject', rule: 'required', value: undefined },
+    noValue: {
+      field: 'noValue',
+      rule: 'required',
+      value: null,
+      config: { required: true },
+    },
+    notInObject: {
+      field: 'notInObject',
+      rule: 'required',
+      value: undefined,
+      config: { required: true },
+    },
   });
   t.deepEqual(result, validator.getErrors());
 });

src/__tests__/validator_tests.js

@@ -39,7 +39,10 @@ test('validate should filter out valid values', t => {
 test('validateField should update errors', t => {
   const validator = new Validator({ a: { required: true }, b: { required: true } });
   validator.validateField('a', null);
-  t.deepEqual(validator.errors, { a: { field: 'a', rule: 'required', value: null } });
+  t.deepEqual(
+    validator.errors,
+    { a: { field: 'a', rule: 'required', value: null, config: { required: true } } },
+  );
   validator.validateField('a', 'c');
   t.deepEqual(validator.errors, {});
 });
@@ -49,7 +52,12 @@ test('validateField should return object with offending rule name', t => {
 
   t.deepEqual(
     validator.validateField('a', '2.0'),
-    { field: 'a', rule: 'numeric/integerOnly', value: '2.0' }
+    {
+      field: 'a',
+      rule: 'numeric.integerOnly',
+      value: '2.0',
+      config: { numeric: { integerOnly: true } },
+    }
   );
 });
 

src/rules/__tests__/array_tests.js → src/rules/__tests__/arrayOf_tests.js

@@ -5,6 +5,6 @@ import { arrayOf } from '../';
 test('rules.arrayOf should return array of validation errors', t => {
   t.deepEqual(
     arrayOf('elements', [{}], { name: { required: true } }),
-    [{ name: { rule: 'required', value: undefined, field: 'name' } }]
+    [{ name: { rule: 'required', value: undefined, field: 'name', config: { required: true } } }]
   );
 });

src/validator.js

@@ -39,7 +39,7 @@ export default class Validator {
         );
 
         if (result) {
-          result = { field, rule: result, value };
+          result = { field, rule: result, value, config: this.config[field] };
           this.errors = assign({}, this.errors, { [field]: result });
           break;
         } else {