maybeAsValue

maybeAsValue<T>(x): [Nothing] extends [T] ? IsEqual<T, Nothing> extends true ? undefined : Just<T> | undefined : Just<T>

This function checks if the provided Maybe value is a Just and returns the contained value. If the value is Nothing, it returns undefined, effectively handling optional values in your code.

Example

maybeAsValue("foobar")
// => "foobar"

maybeAsValue(Nothing)
// => undefined

Type Parameters

• T extends unknown

The type of the value encapsulated by Just.

Parameters

x

T

The Maybe value to extract the value from.

Returns

[Nothing] extends [T] ? IsEqual<T, Nothing> extends true ? undefined : Just<T> | undefined : Just<T>

The value contained within Just, or undefined if the input is Nothing.