defaultTo

2 overloads

defaultTo<T>(fallback: T[], primitive: ArrayTypedPrimitive<T>): ArrayTypedPrimitive<T>

Wraps a primitive so that missing or empty-string inputs produce fallback instead.

An array primitive keeps its string | string[] calling convention through the wrapper (an array input falls through to the wrapped parser untouched).

fallback T[]

primitive ArrayTypedPrimitive<T>

returns ArrayTypedPrimitive<T>

Example:

const countOrZero = defaultTo(0, int.min(0));
const idsOrNone = defaultTo([], array(int));

defaultTo<T>(fallback: T, primitive: TypedPrimitive<T>): TypedPrimitive<T>

Wraps a primitive so that missing or empty-string inputs produce fallback instead.

An array primitive keeps its string | string[] calling convention through the wrapper (an array input falls through to the wrapped parser untouched).

fallback T

primitive TypedPrimitive<T>

returns TypedPrimitive<T>

Example:

const countOrZero = defaultTo(0, int.min(0));
const idsOrNone = defaultTo([], array(int));

Learn: Primitives and builders