Add jest

.babelrc

-{
-  "presets": ["@babel/preset-env"],
-  "ignore": ["**/__tests__/**", "*.test.js", "*.spec.js"]
-}

.eslintignore

 # bin folder
 bin
+
 # build folder 
 build
 dist
 
+# config files
+*.config.js
+
 # exclude src
 !src/**
\ No newline at end of file

babel.config.js

+module.exports = {
+  presets: ['@babel/preset-env'],
+  ignore: ['**/__tests__/**', '*.test.js', '*.spec.js']
+};

package.json

@@ -6,7 +6,7 @@
     "start": "npm run prod",
     "dev": "NODE_ENV=development npm run watch ./src/bin/www",
     "prod": "npm run build && NODE_ENV=production node ./dist/bin/www",
-    "build": "npm run clean && babel ./src --config-file ./.babelrc --out-dir dist",
+    "build": "npm run clean && babel ./src --config-file ./babel.config.js --out-dir dist",
     "clean": "rimraf dist",
     "watch": "nodemon --config ./nodemon.json --"
   },
@@ -24,6 +24,7 @@
     "@babel/preset-env": "^7.3.1",
     "eslint": "^5.13.0",
     "eslint-plugin-import": "^2.16.0",
+    "jest": "^24.1.0",
     "nodemon": "^1.18.9"
   }
 }