<NME> ember-cli-build.js
<BEF> /* eslint-env node */
'use strict';
var concat     = require('broccoli-concat');
var Funnel     = require('broccoli-funnel');
var mergeTrees = require('broccoli-merge-trees');
var eslint = require('broccoli-lint-eslint');
var replace    = require('broccoli-string-replace');
var gitVersion = require('git-repo-version');
var BabelTranspiler = require('broccoli-babel-transpiler');
    },
  });

  /*
    This build file specifies the options for the dummy test app of this
    addon, located in `/tests/dummy`
    This build file does *not* influence how the addon or the app using it
    behave. You most likely want to be modifying `./index.js` or app's build file
  */

  return app.toTree();
};
    outputFile: '/ember-mocha.js'
  });

  var eslintLib = eslint(lib, { testGenerator: 'mocha' });
  var eslintTests = eslint(tests, { testGenerator: 'mocha' });

  var testsAndESLint = mergeTrees([tests, eslintLib, eslintTests]);
  testsAndESLint = concat(compileES6(testsAndESLint), {

<MSG> ESLint: Use `group` option

<DFF> @@ -3,7 +3,7 @@ var resolve = require('resolve');
 var concat     = require('broccoli-concat');
 var Funnel     = require('broccoli-funnel');
 var mergeTrees = require('broccoli-merge-trees');
-var eslint = require('broccoli-lint-eslint');
+var ESLint = require('broccoli-lint-eslint');
 var replace    = require('broccoli-string-replace');
 var gitVersion = require('git-repo-version');
 var BabelTranspiler = require('broccoli-babel-transpiler');
@@ -106,8 +106,8 @@ module.exports = function(defaults) {
     outputFile: '/ember-mocha.js'
   });
 
-  var eslintLib = eslint(lib, { testGenerator: 'mocha' });
-  var eslintTests = eslint(tests, { testGenerator: 'mocha' });
+  var eslintLib = ESLint.create(lib, { group: 'lib', testGenerator: 'mocha' });
+  var eslintTests = ESLint.create(tests, { group: 'tests', testGenerator: 'mocha' });
 
   var testsAndESLint = mergeTrees([tests, eslintLib, eslintTests]);
   testsAndESLint = concat(compileES6(testsAndESLint), {

ESLint: Use `group` option