Enable typegen by default in development

I think the Nexus defaults for typegen should be more helpful. I propose the following:

1. Enabled by default when NOT production
2. Output to node_modules/@types/typegen-nexus/index.d.ts

We learnt from Nexus Framework that these are great defaults.

[jasonkuhrt]

You should run ts-node-dev with transpile only flag

[calirvine]

Disclaimer: This could be entirely due to misconfiguration on my side, I find the makeSchema config object a bit confusing.

I’ve run into some trouble when leaving my typegen output out of source control, and that is that I lose portability of the project. When I clone my repo to another environment, I run npm install and prisma generate which generates my prisma types fine, but when I start my project I get a lot of typescript type errors, usually on objectTypes that use custom scalars.

i.e

TSError: ⨯ Unable to compile TypeScript:
src/schema/story.ts:20:7 - error TS2339: Property 'json' does not exist on type 'ObjectDefinitionBlock<"Story">'.

20     t.json('body')

If I comment out the field, allow the project to run successfully, the scalar is added to my generated types and I can then uncomment the field and it works as expected.

I’m assuming this could be fixed by keeping generated types in source control (currently I keep them in the recommended node_modules/@types/typegen-nexus/index.d.ts) but I could be wrong, and this might be unrelated to this discussion.