I think I didn't make my point quite clear. Let's consider the case where version 3.1 needs to return something different than version 3.
A good (IMHO) early-return pattern would look like this:
if (version >= 3.1) {
return "result_3_1";
}
if (version >= 3) {
return "result_3";
}
// ...
if (version >= 3) {
if (version === 3.1) {
return "result_3_1";
}
return "result_3";
}
// ...
With the switch-true on the other hand I could make good use of this 'stepping through ranges'-problem and could even make use of the fallthrough, in case it should fall back to a different value:
switch (true) {
case version >= 3.1:
return "result_3_1"; // just comment this out if you need the result of version 3 instead
case version >= 3:
return "result_3";
// ...
}