everyItem

Creates an every item validation action.

const Action = v.everyItem<TInput, TMessage>(requirement, message);

Generics

• TInput extends ArrayInput
• TMessage extends ErrorMessage<EveryItemIssue<TInput>> | undefined

Parameters

• requirement ArrayRequirement<TInput>
• message TMessage

Explanation

With everyItem you can freely validate the items of an array and return true if they are valid or false otherwise. If not every item matches your requirement, you can use message to customize the error message.

Returns

• Action EveryItemAction<TInput, TMessage>

Examples

The following examples show how everyItem can be used.

Sorted array schema

Schema to validate that an array is sorted.

const SortedArraySchema = v.pipe(
  v.array(v.number()),
  v.everyItem(
    (item, index, array) => index === 0 || item >= array[index - 1],
    'The numbers must be sorted in ascending order.'
  )
);

Related

The following APIs can be combined with everyItem.

Schemas

• any,
• array,
• custom,
• instance,
• tuple,
• unknown

Methods

• pipe

Utils

• isOfKind,
• isOfType