Yup (jun16)

Dead simple Object schema validation

https://github.com/jquense/yup

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react hook form vs formik

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Formik (jun17)

Build forms in React, w/o the tears 😭

https://formik.org/docs/guides/react-native

React Hook Form (mar19)

React Hooks for form state management and validation

https://react-hook-form.com