63 replies

Is there a way to explicitly type certain drizzle results as `Array<T | undefined>`?

For example, I am making a query which I know will sometimes return undefined, since I am accessing a row that may or may not be present. I'm not sure how to type this such that I have type safety through the rest of the code to ensure that I never access properties without undefined checks.

I'm aware of Typescript

noUncheckedIndexedAccess

noUncheckedIndexedAccess

but that will change the behavior of all arrays everywhere in my codebase, which I do not want. I just want the ability to indicate that a certain Drizzle select result will sometimes have no items returned.

e.g.

const [maybeExistingEntity] = await drizzle.select(.....).limit(1)

const [maybeExistingEntity] = await drizzle.select(.....).limit(1)

now strongly types

maybeExistingEntity

maybeExistingEntity

where I would like the type to be

T | undefined

T | undefined

Drizzle Team•3y ago•

63 replies

francis

Is there a way to explicitly type certain drizzle results as `Array<T | undefined>`?

noUncheckedIndexedAccess

noUncheckedIndexedAccess

const [maybeExistingEntity] = await drizzle.select(.....).limit(1)

const [maybeExistingEntity] = await drizzle.select(.....).limit(1)

now strongly types

maybeExistingEntity

maybeExistingEntity

where I would like the type to be

T | undefined

T | undefined

Is there a way to explicitly type certain drizzle results as `Array<T | undefined>`?

Similar Threads

Is there a way to explicitly type certain drizzle results as `Array<T | undefined>`?

Similar Threads

Similar Threads

Similar Threads