Code:
  (lambda ()
    (setq indent-tabs-mode nil)
    (setq js-indent-level 2)
    (js-ts-mode)
    (indent-region (point-min) (point-max)))

Name: Basic indentation

=-=
const foo = () => {
  console.log("bar");
  if (x) {
    return y;
  } else if (y) {
    return u;
  }
  return baz.x()
    ? true
    : false;
}
=-=-=

Name: Statement indentation without braces

=-=
function bracketless_statements(x) {
  if (x == 0)
    console.log("if_statement");
  else if (x == 1)
    console.log("if_statement");
  else
    console.log("else_clause");
  for (let i = 0; i < 1; i++)
    console.log("for_statement");
  for (let _ of [true])
    console.log("for_in_statement");
  while (x-- > 0)
    console.log("while_statement");
  do
    console.log("do_statement");
  while (false)
};
=-=-=