boolFalsy

Builds an EitherLeft<"bool"> for an explicitly falsy value (0, "", null, undefined, false).

Interactive example

Syntax

function boolFalsy<
	const GenericInput extends BoolFalsyValue = undefined
>(
  input?: GenericInput
): EitherBoolFalsy<GenericInput>;

Parameters

• input: Falsy value (optional).

Return value

An EitherLeft<"bool", GenericInput> allowing you to represent an explicit false.

See also

• bool – Automatic truthy/falsy conversion.
• whenIsBoolFalsy – To trigger an action on falsy values.