4 replies

Validating GraphQL Enum Types with Schema in TypeScript

Hi, i'm trying schema to see if it can do what i can't in zod.

i have a gql types generated with

gql.tada

gql.tada

which give me a type for an enum

type F = "ONE" | "TWO" | "THREE";

type F = "ONE" | "TWO" | "THREE";

so i want to create a

schema

schema

validation that is checked again that type, so typescript would tell me if it's not matching anymore.

so i create

const Frequency = Schema.Literal("ONE", "TWO", "THREE")

const Frequency = Schema.Literal("ONE", "TWO", "THREE")

but then not sure how to check that it matched the type i get from gql. was trying to look into

declare

declare

but can't figure it out :/

so if later the back team add to F

FOUR

FOUR

i'd like my typescript check to throw an error saying

Frequency

Frequency

is missing

FOUR

FOUR

the plan is to use the schema to validate with react-hook-form