MODULARIZE=1 adds code incompatible with MIN_NODE_VERSION=101900

[mzoliker]

Hi! Using emscripten v3.1.59, here are the two lines at the very beginning that should be fixed:

  var _scriptName = typeof document != 'undefined' ? document.currentScript?.src : undefined;
  if (typeof __filename != 'undefined') _scriptName ||= __filename;

The optional chaining operator (?.) and the logical OR assignment (||=) are only available in newer versions of NodeJS.
Those two lines are added by -sMODULARIZE=1.
Thanks a lot for the fix!
Kind regards,
Maurice

[kripken]

This may have regressed in #21701 as those lines are added by link.py now, and @sbc100 maybe we run the closure lowering too early, or something like that?

[sbc100]

Currently we run things like closure and transpilation only over the inner module code.

We could either fix this directly or, as you say, try to run the transpiler over the entire code including the module wrapper.