Is it possible to add support to the Type.String additional properties for the enum keyword about typebox HOT 2 CLOSED

@eXigentCoder Hi,

TypeBox does't generate enum schematics....currently. Instead it preferences anyOf because this keyword generalizes to all types, (not limited to string, number, boolean, etc), and also means TypeBox can maintain a singular code path for inferring and processing unions (where enum would introduce a secondary path).

This said, I am looking into supporting the enum string representation, but it's not going to be ready for some time. The work involves implementing a infrastructure to remap Enum into Union when attempting to apply type transforms and composition, of which attempts to introduce this under the current infrastructure would be untenable given the complexity of unions.

StringEnum

Even though TypeBox doesn't generate these schematics, you can write a custom type that does. The following is one way to approach it.

import { Type, Static } from '@sinclair/typebox'

const StringEnum = <T extends string[]>(items: [...T]) => 
  Type.Unsafe<T[number]>({ type: 'string', enum: items })

// ...

const T = StringEnum(['A', 'B', 'C'])

type T = Static<typeof T>

If using the TypeCompiler / Value modules to validate this type, have a read over the TypeRegistry section of the readme as you will need to register for schematics of this form.

https://github.com/sinclairzx81/typebox#typeregistry

Hope this helps
S

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Hey there,
Thanks so much for the feedback, makes a lot of sense and thank you for a really awesome library!

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