Still broken for me on Magento 2.2.6 with jshrink 1.3.3 with all third party extensions disabled. Any tips on how to debug?
What I've done for now to get things working is just commented out the error output on line 529 of vendor/tedivm/jshrink/src/JShrink/Minifier.php
The commented line looks like the following:
//throw new \RuntimeException('...