Fix npm script “lint”

[tripu]

There 60,887 are errors.

$ npm run lint > /dev/null
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! phaker@6.0.1 lint: `jshint ./lib --config ./.jshintrc`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the phaker@6.0.1 lint 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!     ~/.npm/_logs/2020-11-10T12_11_24_302Z-debug.log