Function assertNotUndefined

deps/v8/test/intl/assert.js:147–151

* Throws if value is undefined.

(value, user_message = '')

 * Throws if value is undefined.
 */
function assertNotUndefined(value, user_message = '') {
  if (value === undefined) {
    fail("not undefined", value, user_message);
  }
}


/**