isOptionalEmpty

Type guard that detects an EitherOptionalEmpty.

Interactive example

Syntax

function isOptionalEmpty<
	GenericInput extends unknown
>(
  input: GenericInput
): input is Extract<GenericInput, EitherOptionalEmpty>;

Parameters

• input: Either coming from optional.

Return value

true if the value is undefined.

See also

• whenIsOptionalEmpty.
• isOptionalFilled.