JavaScript, Typescript switch statement: way to run same code for two cases?

case 68:
case 40:
  // stuff
  break;

Yes, you just put the related case statements next to each other, like this:

case 40:  // Fallthrough
case 68:
   // Do something
   break;

case 30:
   // Do something different
   break;

The Fallthrough comment is there for two reasons:

• It reassures human readers that you're doing this deliberately
• It silences warnings from Lint-like tools that issue warnings about possible accidental fallthrough.

Just put them right after each other without a break

switch (myVar) {
  case 68:
  case 40:
    // Do stuff
  break;

  case 30:
    // Do stuff
  break;
}