File: project/tests/helpers/routes
Duplicate default exports
Error: Duplicate default exports
    at /project/node_modules/ember-cli/node_modules/broccoli-es6modules/node_modules/esperanto/esperanto.js:228:12
    at Array.forEach (native)
    at findImportsAndExports (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/node_modules/esperanto/esperanto.js:206:11)
    at getStandaloneModule (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/node_modules/esperanto/esperanto.js:516:20)
    at Object.toAmd (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/node_modules/esperanto/esperanto.js:2411:9)
    at Class.module.exports.CachingWriter.extend.transpileThroughCache (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/index.js:50:24)
    at Class.module.exports.CachingWriter.extend.handleFile (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/index.js:33:22)
    at Class.<anonymous> (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/index.js:22:16)
    at Array.forEach (native)
    at Class.module.exports.CachingWriter.extend.updateCache (/project/node_modules/ember-cli/node_modules/broccoli-es6modules/index.js:20:8)