Optional property with const string array

Hello, the following

const x = ["a", "b", "c"] as const;
const myType = type({
  "optional?": type("===", ...x),
});

const x = ["a", "b", "c"] as const;
const myType = type({
  "optional?": type("===", ...x),
});

is giving a

Only required keys may specify default values

Only required keys may specify default values

error. It's not really clear to me why - I assume the

===

===

operator is doing more than what I think.

Is there a way to have an optional property be one of a string array in arktype? Or is what I'm after effectively indexed access expressions? Thanks

GitHub

Issues · arktypeio/arktype

TypeScript's 1:1 validator, optimized from editor to runtime - Issues · arktypeio/arktype

arktype•2y ago•

5 replies

dibbo

Optional property with const string array

Hello, the following

const x = ["a", "b", "c"] as const;
const myType = type({
  "optional?": type("===", ...x),
});

const x = ["a", "b", "c"] as const;
const myType = type({
  "optional?": type("===", ...x),
});

is giving a

Only required keys may specify default values

Only required keys may specify default values

error. It's not really clear to me why - I assume the

===

===

operator is doing more than what I think.

Is there a way to have an optional property be one of a string array in arktype? Or is what I'm after effectively indexed access expressions? Thanks

GitHub

Issues · arktypeio/arktype

TypeScript's 1:1 validator, optimized from editor to runtime - Issues · arktypeio/arktype

Optional property with const string array

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