schema-v-4.js

export function async someAction() {
  const response = await someHelperFunctionThatCallAnotherService();

  if (!response) {
    return dispatch({
      type: 'FAILURE'
    })
  }

  // check schema
  const schema = yup.object().required().shape({
    bar: yup.array().required().shape({
    hey: yup.string().required()
  }
  ),
 });
 
 const isSchemaValid = await schema.isValid(response);
 if ( !isSchemaValid ) {
   return dispatch({
    type: 'NOT_VALID'
  })
 }

 return dispatch({
  type: 'SUCCESS',
  data: response
 })
}