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

Point-Char: |

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

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

Name: Switch statement

=-=
const foo = (x: string) => {
  switch (x) {
    case "a":
      console.log(x);
      return 1;
    case "b":
      return 2;
    case "c":
    default:
      return 0;
  }
};
=-=-=

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

Name: JSX indentation

=-=
const foo = (props) => {
  return (
    <div>
      <div>
        <div>
          <div>
            {
              props.foo
                ? Hello, foo!
                : Hello, World!;
            }
          </div>
        </div>
      </div>
    </div>
  );
}
=-=-=

Name: JSX indentation with attributes

=-=
const foo = (props) => {
  return (
    <div
      className={foo}
      onClick={() => {
        alert('???');
        return () => {
          return 5+5;
        };
      }}
    >
      <p>Some text</p>
    </div>
  );
}
=-=-=