Lint your JavaScript files in Atom with ESLint. If you're not familiar, ESLint is a pluggable linting utility for JavaScript. Be sure to check out the plethora of rules that ESLint has available.
On save, lines containing linting errors will be highlighted in the gutter.
cmd-alt-l
Lint the current file and display a list of errors.cmd-alt-shift-l
Reload the .eslintrc
file.apm install eslint
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.