Encoder.md

• Encoder interface
• Combinators

Encoder interface

export interface Encoder<A> {
  readonly encode: (a: A) => unknown
}

Example

An encoder representing a nullable value

import * as E from 'io-ts/lib/Encoder'

export function nullable<A>(or: E.Encoder<A>): E.Encoder<null | A> {
  return {
    encode: (a) => (a === null ? a : or.encode(a))
  }
}

Combinators

• nullable
• type
• partial
• record
• array
• tuple
• intersection
• sum
• lazy