rollup doesn't strip const with comma operator

[yuqianma]

Check here: repl

I encounterd a problem and reproduce this minimal version.
You can see the line backHinge = BACK_HINGE_SIZE should be stripped but not. This leads to the "not defined error".

However if I write them in two line version, e.i.:

const backHinge = BACK_HINGE_SIZE;
const fontHinge = FONT_HINGE_SIZE;

Everything runs perfect.

Does it mean const & comma syntax is not supported? But since it's verbose to write multiple const, this feature is useful.

Anyway, thanks for your awesome work!

[lukastaegert]

Hi @yuqianma,
thanks for filing this issue! To answer your question:
Yes, your use case should be handled properly by rollup and this is a bug.

Incidentally I am refactoring some core parts of the statement rendering logic at the moment where fixing this issue would fit in nicely. So there is a good chance this will be fixed in the near future :) Until then, though, you will need to split this specific constant.

For reference, I am quite sure this is related to #1831.

[yuqianma]

Hi @lukastaegert

Thanks! It's great to know you guys are striving for a better rollup. Can't wait to see the new version!