> The common case of "bundling" is just concatenating files, which works fine if people add their damned semicolons.
bundling is not just concatenation, and certainly not in the "common" case.
> "not using any semicolons at all is a very popular trend in JS these days
> Javascript programmers often follow trends, not sane practice
Please have a look all the popular libraries and frameworks and their codebases[1], then tell me you still think your assessment of the Javascript community is at all fair.