How is Google's Closure Compiler these days? The last time I tried CLojurescript about 5 years ago it was the source of many a cryptic error, non-existent docu

How is Google's Closure Compiler these days? The last time I tried CLojurescript about 5 years ago it was the source of many a cryptic error, non-existent documentation, and no connection to any of the Javascript outside of Google-flavor javascript (such as not understanding either `require` or the then-new `import`s) It looks like the documentation is as non-existent today, but it would be interesting to know how it fares in modern world.