Function jsonAsUnion

jsonAsUnion<PRIMITIVE extends string | number | boolean>(
data: unknown,
values: readonly PRIMITIVE[],
): Maybe<PRIMITIVE>
Returns either the data itself, if it is an element of the values, or a JsonAccessError. An input of JsonAccessError is immediately returned.
Type Parameters
- PRIMITIVE extends string | number | boolean
Parameters
- data: unknown
  supposedly a value contained in the given values
- values: readonly PRIMITIVE[]
  the allowed values for the data.
Returns Maybe<PRIMITIVE>
data, correctly typed, or JsonAccessError
- Defined in src/ts/JsonAccess.ts:477