Image validation does not work with yup validate

Question

I'm trying to use yup for verification. Required does not apply to images.

image: yup.string().required("required"),

I am using formik as required fields. This works for every field of form, but not for images. I have initialized the initial value:

const initialValues = {
   image: "",
};

Answer 1

Use this yup verification for file upload

attachment: Yup.mixed()
.test(
  'FILE_SIZE',
  'File is required',
  value => value && value.size >= 10,
)