Supported io-ts Primitives

When you use the OpenAPI generator, it automatically derives schemas from the following io-ts primitives and combinators:

• string
• number
• bigint
• boolean
• null
• nullType
• undefined
• unknown
• any
• array
• readonlyArray
• object
• type
• partial
• exact
• strict
• record
• union
• intersection
• literal
• keyof
• brand
• UnknownRecord
• void

For codecs not built using these primitives, you may need to define schemas manually. You can see Defining custom codec schemas for instructions.