Redoc: Error: Cannot find module 'mobx' from 'redoc.lib.js'

[auahmed]

I'm getting this strange error whenever I try to run my jest test. It was working fine previously but all of a sudden it started to fail.

````
FAIL src/components/Layout/Layout.test.js
● Test suite failed to run

Cannot find module 'mobx' from 'redoc.lib.js'

  at Resolver.resolveModule (node_modules/jest-resolve/build/index.js:179:17)
  at Object.<anonymous> (node_modules/redoc/bundles/redoc.lib.js:398:18)
  at __webpack_require__ (node_modules/redoc/bundles/redoc.lib.js:36:30)
  at Module.<anonymous> (node_modules/redoc/bundles/redoc.lib.js:5353:22)
  at __webpack_require__ (node_modules/redoc/bundles/redoc.lib.js:36:30)

````

im using version 2.0.0-alpha.38 and noticed that there was an error similar to this resolved for cli in alpha 30 i think (https://github.com/Rebilly/ReDoc/issues/576).

and i am importing to use redoc in my code by:
import { RedocStandalone } from 'redoc';

Thanks!

[RomanHotsiy]

Just install mobx: npm install mobx@^4.3.1.

mobx has been moved to peerDependencies so it is not installed automatically.