test: Track code coverage

.travis.yml

@@ -10,6 +10,7 @@ before_script:
 script:
   - npm run all
 after_success:
+  - npx codecov
   - npx babel-node ./bin/sync-algolia.js
 deploy:
   provider: script

package.json

@@ -21,6 +21,11 @@
       "path": "cz-conventional-changelog"
     }
   },
+  "jest": {
+    "collectCoverageFrom": [
+      "src/**/*.js"
+    ]
+  },
   "dependencies": {
     "classnames": "^2.2.5"
   },

src/__tests__/index.test.js

 /* eslint-env jest */
-import feather from '../..';
+import feather from '../index';
 
 test('has correct properties', () => {
   expect(feather).toHaveProperty('icons');