Function lazy

lazy<T>(mkDecoder: () => Decoder<T>): Decoder<T>

Decoder for recursive data structures.

Type Parameters

T

Parameters

mkDecoder: () => Decoder<T>
A function that returns a decoder

Returns Decoder<T>

A decoder that can handle recursive data structures

Example

interface Tree {
  value: number;
  children?: Tree[];
}

const treeDecoder = JsonDecoder.lazy(() =>
  JsonDecoder.object<Tree>(
    {
      value: JsonDecoder.number,
      children: JsonDecoder.optional(JsonDecoder.array(treeDecoder))
    },
    'Tree'
  )
);