Priority of [ typeError vs required ]

Describe the bug

// my scheme
yup
    .number()
    .typeError('this is NaN')
    .positive('only positive')
    .integer('only int')
    .required('plz input the value'), // never comes here... 

when this scheme meets an empty string( like ""), I expected show error messege of required, which is plz input the value. But actual happen is that the error messege is this is NaN (which is typeError scheme)

In this case, required sechem never comes.

I want to show 'plz input the value' message when value is empty.

Thx in advance 😃

Platform (please complete the following information):

• Browser [chrome]
• Version ["yup": "^0.29.1"]

[nl5887]

The transform function also accepts a secondary value, originalValue. If you want to have empty values as valid, you can use:

let validator = Yup.number()
    .transform((value, originalValue) => {
        return (originalValue === '' ? undefined : value)
    })
    .typeError('Parameter is not a valid numeric value.')

Or if you want to distinguish invalid (type error) values from required values use:

let validator = Yup.number()
    .transform((value, originalValue) => {
        return (originalValue === '' ? undefined : value)
    })
    .typeError('Parameter is not a valid numeric value.')
    .required("Parameter is required.")

[CaitlinWeb-st]

For any of those confused like me, don’t use .default(undefined) use transform as described in #634

Yup.number()
    .transform(value => (isNaN(value) ? undefined : value)) // <---
    .required()
})

@jquense This would be really helpful to put into documentation about number().required(). I would expect it to transform like this under the hood for .required() because otherwise it’s essentially ignored/overruled by the typeError.