Comments (2)
Hi,
Thanks for letting me know. The Type.Undefined()
is actually part of the extended TypeBox API and isn't intended to be used as part of Type.Object({})
schemas (in the current version of TypeBox anyway, this may change in later revisions of this project). The extended set of types provided by TypeBox are detailed here https://github.com/sinclairzx81/typebox#typebox--typescript-1
As an alternative, you can replace Type.Undefined()
with Type.Optional()
which modifies the object property with both undefined
and ? - possibly undefined
on the inferred object type.
Example
const Nullable = <G>(T: G) => Type.Union([T, Type.Null()])
const TNews = Type.Object({
mediaUrl: Type.Optional(Nullable(Type.String())),
link: Nullable(Type.String())
})
type News = Static<typeof TNews>
// type News = {} & {
// mediaUrl?: string | null | undefined;
// } & {
// link: string | null;
// }
Also ensure you have strict: true
enabled in your tsconfig.json
. I have tested on TS 8.3.8 and should work ok. Note that future revisions of TypeBox may mandate on latest versions of the TS compiler. (TypeScript inference rules do change from time to time and this project will seek to align with the most current releases of TypeScript moving forward).
Hope this helps :)
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That can work. Thank you for taking the time to respond, really appreciate your help. Also thank you for creating a wonderful library. Cheers.
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Related Issues (20)
- Optimisations to inference in 0.32 seems to cause `ts(2589)` with composite types. HOT 16
- Add trim option to Type.String() HOT 1
- Should add option to remove redundant prop in Convert() HOT 1
- Metadata missing in custom types HOT 2
- Schema of JSON Schema HOT 3
- Utility type inference appears missing or broken HOT 2
- How to express function optional parameter? HOT 5
- Clean call on extended prisma result object does not work HOT 2
- esm.sh builds are broken if using FormatRegistry HOT 1
- Circular references HOT 4
- Value.Clean causes dereference error on Recursive type with nullable optional union HOT 2
- How to work with dates and timestamps HOT 2
- Issue regarding enums becoming never when using a partial deep method HOT 2
- Support for composite custom kinds HOT 1
- transform object property encoding HOT 4
- Built-in types for JSON? HOT 1
- MaxLength on keys defining a Type.Record HOT 2
- decode object with null prototype HOT 3
- Validate Enum at a low level HOT 4
- AOT compilation using custom registered types HOT 2
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