Vue uses C-style comments.

C++ comments also work but are not documented, so reliance upon them is not advised. (They work probably because of the potential inclusion of C++ header files that may have C++ style comments.)

The shell interpreter line works like it does in shell, perl, and other interpreters. For this reason the # character works like a comment. It is strongly recommended that shell-style comments NOT be used. C style defines (pre-processor directives) are ignored but could conceivably be used in future implementations of Vue.