happypack/examples/react-redux-universal-hot-example/src/components/SurveyForm/surveyValidation.js

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import memoize from 'lru-memoize';
import {createValidator, required, maxLength, email} from 'utils/validation';

const surveyValidation = createValidator({
  name: [required, maxLength(10)],
  email: [required, email],
  occupation: maxLength(20) // single rules don't have to be in an array
});
export default memoize(10)(surveyValidation);