Function null

null(): Decoder<null>

Decoder for null values.

Returns Decoder<null>

A decoder that only accepts null values

Example

const nullDecoder = JsonDecoder.null();
nullDecoder.decode(null); // Ok<null>({value: null})
nullDecoder.decode(123); // Err({ issues: [{ message: '123 is not null', path: [] }] })
nullDecoder.decode(undefined); // Err({ issues: [{ message: 'undefined is not null', path: [] }] })