reuslt.twitterImage is improperly typed as string | undefined

[alexng353]

Typescript claims that it's a string, but it can occasionally be successfully casted to an imageObject type

[jshemas]

Hello. I've added an twitterImageObject type in [email protected].

[alexng353]

Thanks m8. There's also a bug that I'm making a new issue on, causing a segmentation fault while using 'jest' and 'supertest' to test an express.js endpoint. I'll link an example repository for recreating it as well. At this point I've dropped back to 4.11.1, since that version does not include the error I mentioned.

[alexng353]

#162