type ValidationSchema = Record<
  string,
  {
    value?: any
    error?: string
    required?: boolean
    validate?: 'text' | 'number' | 'email' | 'phone' | 'zip' | 'checkbox' | 'select'
    minLength?: number
    maxLength?: number
    helperText?: string
  }
>


// src/initialValues.tsx
const initialValues: ValidationSchema = {
  yourFieldname: {
    value: '',                          // will be filled with field value
    error: '',                          // will be filled with error message
    required: true,                     // if `false` field will be still validated but will not enable the `next` button
    validate: 'text',                   // field validation logic (see types above)
    minLength: 2,                       // validate min length
    maxLength: 20,                      // validate max length
    helperText: 'custom error message'  // change the default error message (applied to `validate` types only)
  },
  {
    // another field
  }
}