Function userAssert

src/core/assert/user.js:28–55

(
  shouldBeTruthy,
  opt_message,
  opt_1,
  opt_2,
  opt_3,
  opt_4,
  opt_5,
  opt_6,
  opt_7,
  opt_8,
  opt_9
)

 * @throws {UserError} when shouldBeTruthy is not truthy.
 */
export function userAssert(
  shouldBeTruthy,
  opt_message,
  opt_1,
  opt_2,
  opt_3,
  opt_4,
  opt_5,
  opt_6,
  opt_7,
  opt_8,
  opt_9
) {
  return assertions.assert(
    USER_ERROR_SENTINEL,
    shouldBeTruthy,
    opt_message,
    opt_1,
    opt_2,
    opt_3,
    opt_4,
    opt_5,
    opt_6,
    opt_7,
    opt_8,
    opt_9
  );
}

/**
 * Throws an error if the first argument isn't an Element.