How can I generate partial return types for queries?

[kylemiller3]

Apologies if this is a common issue but I want to be able to generate a type in Typescript for partial fetches. For instance, if I have a Human and it has age, gender and height and my generated query just fetches height I would like a type that reflects that specific query. Not sure how to accomplish type safety without ugly copy and paste of the auto-generated types.

[ardatan]

'typescript-operations' plugins generates types for the queries. You can test it on the website;
https://graphql-code-generator.com
Is that what you're looking for?

[kylemiller3]

Sort of, but I find my code littered with things like this:

Pick<
            EntitySummary,
            | 'todayGrowth'
            | 'averageDailyGrowth'
            | 'thisWeekAverageGrowth'
            | 'lastUpdated'
            | ......
          >

From the example though it looks like I can use fragments to achieve what I want. Thank you.

[dotansimha]

You can either use fragments, or add preResolveTypes: true to have more readable output.