isBoolFalsy

Type guard that detects an EitherBoolFalsy.

Interactive example

Syntax

function isBoolFalsy<
	GenericInput extends unknown>(
  input: GenericInput
): input is Extract<GenericInput, EitherBoolFalsy>;

Parameters

• input: Value coming from the boolean helpers.

Return value

true if the value is falsy (Left).

See also

• whenIsBoolFalsy.
• isBoolTruthy.