Function both

both<T, U>(first, second): Validator<T & U>

Combine two validators with a logical AND

Type Parameters

T
The first validated type
U
The second validated type

Parameters

first: Validator<T>
The first validator
second: Validator<U>
The second validator

Returns Validator<T & U>

Example

const isNonEmptyStringArray = both(isNonEmptyArray, isStringArray);

  isNonEmptyStringArray([""]) >>
    {
      valid: true,
      parsed: [""],
    };

  isNonEmptyStringArray([]) >>
    {
      valid: false,
      error: "Not a non empty array: []",
    };

  isNonEmptyStringArray([1]) >>
    {
      valid: false,
      error: "Not an array of strings: [1]",
    };