literal

Creates a literal schema.

const Schema = v.literal<TLiteral, TMessage>(literal, message);

Generics

• TLiteral extends Literal
• TMessage extends ErrorMessage<LiteralIssue> | undefined

Parameters

• literal TLiteral
• message TMessage

Explanation

With literal you can validate that the input matches a specified value. If the input is invalid, you can use message to customize the error message.

Returns

• Schema LiteralSchema<TLiteral, TMessage>

Examples

The following examples show how literal can be used.

String literal

Schema to validate a string literal.

const StringLiteralSchema = v.literal('foo');

Number literal

Schema to validate a number literal.

const NumberLiteralSchema = v.literal(26);

Boolean literal

Schema to validate a boolean literal.

const BooleanLiteralSchema = v.literal(true);

Related

The following APIs can be combined with literal.

Schemas

• array,
• exactOptional,
• intersect,
• lazy,
• looseObject,
• looseTuple,
• map,
• nonNullable,
• nonNullish,
• nonOptional,
• nullable,
• nullish,
• object,
• objectWithRest,
• optional,
• record,
• set,
• strictObject,
• strictTuple,
• tuple,
• tupleWithRest,
• undefinedable,
• union

Methods

• assert,
• config,
• fallback,
• getDefault,
• getDefaults,
• getFallback,
• getFallbacks,
• is,
• message,
• parse,
• parser,
• pipe,
• safeParse,
• safeParser

Actions

• check,
• brand,
• description,
• metadata,
• rawCheck,
• rawTransform,
• readonly,
• title,
• transform

Utils

• entriesFromList,
• isOfKind,
• isOfType