Errors and deprecations

[dmitriz]

Getting this error:

~ npm run build
... <all tests are ok> ...
...
Loading "Gruntfile.js" tasks...ERROR
>> invalid snippets detected
Warning: Task "default" not found. Use --force to continue.

Aborted due to warnings.
npm ERR! code ELIFECYCLE
npm ERR! errno 3
npm ERR! @kparc/ref@1.1.0 build: `grunt`
npm ERR! Exit status 3
npm ERR! 
npm ERR! Failed at the @kparc/ref@1.1.0 build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/dmitrizaitsev/.npm/_logs/2019-07-26T03_49_11_024Z-debug.log

Might be due to some outdated deps, e.g. this one had been deprecated:
https://www.npmjs.com/package/grunt-contrib-uglify-es