updating validationSchema dynamically when using hooks

[buildxyz-git]

Similar to 1436 but I am using the react hook useFormik. I would like to set validationSchema after fetching a JSON schema in an API call and use schema-to-yup to create the Yup validation function.

So I currently do this:

    const formik = useFormik({
        initialValues: {},
        onSubmit: (values) => {
            alert(JSON.stringify(vals, null, 2));
        }

Later I try to do this:

formik.validationSchema = buildYup(data);

This results in no validation being performed, if I create a valid test Yup schema when useFormik is initialized it does validate but I need to do it later for my application.

• Am I using useFormik wrong?
• is there a better pattern here?
• would this only be possible if a setValidationSchema function was exposed?