React-final-form: Property 'pristine' does not exist on type 'FormRenderProps'

[KristopherWagner]

Are you submitting a bug report or a feature request?

bug report

What is the current behavior?

Property 'pristine' does not exist on type 'FormRenderProps'. when rendering with TypeScript ^3.5.2 and React ^16.8.6

What is the expected behavior?

pristine is used in the examples but does not appear in FormRenderProps

Sandbox Link

What's your environment?

{
  "react-final-form": "^4.1.0",
  "type-script": "^3.5.2",
  "react": "^16.8.6",
  "react-scripts": "^3.0.1"
}

Other information

[xiaoyuze88]

same issue.

[yanisurbis]

same issue.

[erikras]

Hmm... You didn't specify the version of final-form you're using, and that's the important bit of information, but it certainly seems to be fine with the latest versions (see line 48).

FormRenderProps extends FormState, which has pristine.

[KristopherWagner]

Thanks updating from 4.15.0 to 4.16.1 fixed this issue

[erikras]

Great!

Plus the latest version(s) of RFF have some fun Typescript features.