prettier/tests/switch/empty_lines.js

switch (foo) {
  case "bar":
    doSomething();

  case "baz":
    doOtherThing();
}

switch (foo) {

  case "bar":
    doSomething();

  case "baz":
    doOtherThing();
}

switch (foo) {
  case "bar":
    doSomething();

  case "baz":
    doOtherThing();

}

switch (foo) {
  case "bar":
    doSomething();



  case "baz":
    doOtherThing();
}

switch (x) {
  case y:
    call();

    break;

  case z:
    call();

    break;
}