Function _tryBlock

docs/tests/v2/es6/js/sanddance.js:8689–8697

(block)

}

function _tryBlock(block) {
  var error;
  try {
    block();
  } catch (e) {
    error = e;
  }
  return error;
}

function _throws(shouldThrow, block, expected, message) {
  var actual;