I examined your solution to the No Logging problem with Kitematic - a little bit of code change in the /utils/DockerUtil.js file. I also extracted the app.asar file to examine the transpiled version of the same file. It seems all the lets are transpiled into vars.
I suspect that was not the intention of the developers. I'm no expert, but I suspect the tsconfig.json file has two mentions of es2015, where it is supposed to be case-sensitive all-caps ES2015.
Can I implore you to test this out? I would do it myself, but I'm resisting the urge to deep dive into yet another project. Thanks.