getFallback

Returns the fallback value of the schema.

const value = v.getFallback<TSchema>(schema, dataset, config);

Generics

• TSchema extends BaseSchema<unknown, unknown, BaseIssue<unknown>> | BaseSchemaAsync<unknown, unknown, BaseIssue<unknown>>

Parameters

• schema TSchema
• dataset OutputDataset<InferOutput<TSchema>, InferIssue<TSchema>> | undefined
• config Config<InferIssue<TSchema>> | undefined

Returns

• value InferFallback<TSchema>

Examples

The following examples show how getFallback can be used.

Fallback string schema

Get the fallback value of a string schema.

const FallbackStringSchema = v.fallback(v.string(), "I'm the fallback!");
const fallbackValue = v.getFallback(FallbackStringSchema); // "I'm the fallback!"

Related

The following APIs can be combined with getFallback.

Schemas

• any,
• array,
• bigint,
• blob,
• boolean,
• custom,
• date,
• enum,
• exactOptional,
• file,
• function,
• instance,
• intersect,
• lazy,
• literal,
• looseObject,
• looseTuple,
• map,
• nan,
• never,
• nonNullable,
• nonNullish,
• nonOptional,
• null,
• nullable,
• nullish,
• number,
• object,
• objectWithRest,
• optional,
• picklist,
• promise,
• record,
• set,
• strictObject,
• strictTuple,
• string,
• symbol,
• tuple,
• tupleWithRest,
• undefined,
• undefinedable,
• union,
• unknown,
• variant,
• void

Methods

• assert,
• config,
• fallback,
• keyof,
• message,
• omit,
• partial,
• pick,
• pipe,
• required,
• unwrap

Async

• arrayAsync,
• customAsync,
• exactOptionalAsync,
• fallbackAsync,
• intersectAsync,
• lazyAsync,
• looseObjectAsync,
• looseTupleAsync,
• mapAsync,
• nonNullableAsync,
• nonNullishAsync,
• nonOptionalAsync,
• nullableAsync,
• nullishAsync,
• objectAsync,
• objectWithRestAsync,
• optionalAsync,
• partialAsync,
• pipeAsync,
• recordAsync,
• requiredAsync,
• setAsync,
• strictObjectAsync,
• strictTupleAsync,
• tupleAsync,
• tupleWithRestAsync,
• unionAsync,
• variantAsync