Go to Atom Preferences (aka Config)
Click the button that says “Open Config Folder”
In the tree view, go to packages/linter-jshint/lib and open main.js.
Right under “activate()” modify this line:
this.scopes = ['source.js', 'source.js-semantic']
to
this.scopes = ['source.js', 'source.js-semantic', 'source.js.jxa']
Save it. You may need to restart Atom.