react-native is a required dependency?

[Guymestef]

My project is using typescript, I upgraded formik from 0.11.0-rc.2 to 0.11.9, and now my webpack build is outputtingthe error:
ERROR in [at-loader] ./node_modules/formik/dist/formik.d.ts:4:39
TS2307: Cannot find module 'react-native'.

Current Behavior

react-native is a required dependency

Desired Behavior

react-native is not a required dependency

Info

• Formik Version: 0.11.9
• OS: windows 10
• Node Version: 9.5.0
• Package Manager and version: npm 5.6.0
• Typescript: 2.7.1

[corydeppen]

One workaround, similar to what's needed for the missing prop-types declaration, is to install @types/react-native. Unfortunately, this causes the build to throw an error Duplicate identifier 'require' as mentioned in DefinitelyTyped/DefinitelyTyped#16825.

@jaredpalmer Since this is slightly different than the prop-types issue, do you think @types/react-native should be added to dependencies so TS devs don't have to worry about the extra install step? Or should this extra dependency be included with @types/prop-types in the install instructions?

[corydeppen]

It looks like the Duplicate identifier 'require' error may have been hit and caused the @types/node dependency to be removed and a small workaround to be added to Formik. I'm hoping this isn't the recommended solution for devs relying on the Node types.

[jaredpalmer]

Yeah we are going to need to drop react-native TypeScript support. I tried and thought I had it working and tested on like 5 projects of mine. However, clearly I broke the universe. I’m out at dinner, but the revert is as follows: remove types array from ts config, uninstall/remove react-native types, remove that declaration, reinstall @types/node.

If someone can submit a PR I can merge ASAP and release off my phone’s