Function assertIsBoolean

Asserts that the input is a boolean.

Throws

An error if the input is not a boolean.

Example

const fn = (x: unknown) => {
  assertIsBoolean(x);
  return x; // x has inferred type boolean
};
  • assertIsBoolean(x): asserts x is boolean

  • Parameters

    • x: unknown

      The input to be asserted.

    Returns asserts x is boolean