Another option: caption of your own pirate ship, inside a giant battleship.

The word transpiler was used before we had web browsers, much less javascript.

Point taken that it is still a compiler.

It probably means that it was written before we had a complete and correct implementation of the STL on all major compilers.

Google around for Visual Studio 6 STL, and take into account the fact that most organizations don't upgrade right away, and you're looking at at least 2005 before you could rely on the STL cross-platform. Maybe much later.