Function throws

packages/vitest/src/utils.ts:140–153

(thunk: () => void, error?: Error | ((u: unknown) => undefined), ..._: Array<never>)

 * @since 0.21.0
 */
export function throws(thunk: () => void, error?: Error | ((u: unknown) => undefined), ..._: Array<never>) {
  try {
    thunk()
    fail("Expected to throw an error")
  } catch (e) {
    if (error !== undefined) {
      if (Predicate.isFunction(error)) {
        error(e)
      } else {
        deepStrictEqual(e, error)
      }
    }
  }
}

/**
 * Asserts that `thunk` throws an error.