Exports defaultShouldValidate and defaultShouldAsyncValidate

These default functions are exported for external use - particularly so
that a user can wrap the default functionality with specialised behaviour.

To resolve redux-form#2890

src/__tests__/index.spec.js

@@ -17,6 +17,8 @@ import {
   blur,
   change,
   clearSubmitErrors,
+  defaultShouldAsyncValidate,
+  defaultShouldValidate,
   destroy,
   Field,
   Fields,
@@ -106,6 +108,12 @@ describe('index', () => {
   it('should export clearSubmitErrors', () => {
     expect(clearSubmitErrors).toExist().toBeA('function')
   })
+  it('should export defaultShouldAsyncValidate', () => {
+    expect(defaultShouldAsyncValidate).toExist().toBeA('function')
+  })
+  it('should export defaultShouldValidate', () => {
+    expect(defaultShouldValidate).toExist().toBeA('function')
+  })
   it('should export destroy', () => {
     expect(destroy).toExist().toBeA('function')
   })

src/createAll.js

@@ -20,6 +20,8 @@ import createIsValid from './selectors/isValid'
 import createIsSubmitting from './selectors/isSubmitting'
 import createHasSubmitSucceeded from './selectors/hasSubmitSucceeded'
 import createHasSubmitFailed from './selectors/hasSubmitFailed'
+import defaultShouldAsyncValidate from './defaultShouldAsyncValidate'
+import defaultShouldValidate from './defaultShouldValidate'
 import Form from './Form'
 import FormSection from './FormSection'
 import SubmissionError from './SubmissionError'
@@ -31,6 +33,8 @@ const createAll = structure => ({
   // separate out field actions
   actionTypes,
   ...actions,
+  defaultShouldAsyncValidate,
+  defaultShouldValidate,
   Field: createField(structure),
   Fields: createFields(structure),
   FieldArray: createFieldArray(structure),

src/index.js

@@ -17,6 +17,8 @@ export const {
   blur,
   change,
   clearSubmitErrors,
+  defaultShouldAsyncValidate,
+  defaultShouldValidate,
   destroy,
   Field,
   Fields,