fix(lint): added eslint files

.eslintignore

@@ -0,0 +1,3 @@
+.nyc_output/
+node_modules/
+coverage

.eslintrc.json

@@ -0,0 +1,26 @@
+{
+  "root": true,
+  "env": {
+      "node": true,
+      "jest": true
+  },
+  "extends": "airbnb",
+  "rules": {
+      "no-underscore-dangle": "off",
+      "no-param-reassign": ["error", { "props": false }],
+      "no-restricted-syntax": "off",
+      "no-plusplus": "off",
+      "comma-dangle": "off",
+      "max-len": "off",
+      "prefer-template": "off",
+      "guard-for-in": "off",
+      "indent": ["error", 4],
+      "prefer-destructuring": "off",
+      "arrow-body-style": "off",
+      "object-curly-newline": "off",
+      "no-await-in-loop": "off",
+      "no-continue": "off",
+      "consistent-return": "off",
+      "implicit-arrow-linebreak": "off"
+  }
+}