`required` determination from yup schema inside a Field component

[rosskevin]

I am providing material-ui components for react-formal to render. As part of the material design spec for required fields, I need to display an asterisk in the label.

With me so far? Great.

I'm using yup - awesome - love it. So:

Given a schema

const schema = yup.object({
  firstName: yup.string().trim().default('').required('First name is required')
})

When I render a custom material-ui field Then I need to inspect the yup schema to determine if it is required

I see that I receive meta with the StringSchema:

I didn't spot anything in the yup api, can I query the StringSchema somehow to determine required?

[jquense]

try: https://github.com/jquense/yup#mixeddescribe-schemadescription,

it should give you a list of the schema tests (among other things)

[rosskevin]

Thanks Jason!