Upgrade library version

.babelrc

@@ -1,3 +1,3 @@
 {
-  "presets": ["env", "react"]
+  "presets": ["@babel/preset-env", "@babel/preset-react"]
 }

.eslintrc.json

@@ -1,12 +1,67 @@
 {
-  "extends": ["airbnb"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings"
+  ],
+  "plugins": ["react"],
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "module",
+    "ecmaFeatures": {
+      "jsx": true
+    }
+  },
   "env": {
+    "es6": true,
     "browser": true,
-    "node": true
+    "node": true,
+    "jquery": true,
+    "mocha": true
   },
   "rules": {
-    "no-console": "off",
-    "comma-dangle": "off",
-    "react/jsx-filename-extension": "off"
+    "quotes": ["error", "single"],
+    "no-console": 1,
+    "no-debugger": 1,
+    "no-var": 1,
+    "semi": [1, "always"],
+    "no-trailing-spaces": 0,
+    "eol-last": 0,
+    "no-unused-vars": 0,
+    "no-underscore-dangle": 0,
+    "no-alert": 0,
+    "no-lone-blocks": 0,
+    "jsx-quotes": 1,
+    "react/display-name": [1, { "ignoreTranspilerName": false }],
+    "react/forbid-prop-types": [1, { "forbid": ["any"] }],
+    "react/jsx-boolean-value": 1,
+    "react/jsx-closing-bracket-location": 0,
+    "react/jsx-curly-spacing": 1,
+    "react/jsx-indent-props": 0,
+    "react/jsx-key": 1,
+    "react/jsx-max-props-per-line": 0,
+    "react/jsx-no-bind": 1,
+    "react/jsx-no-duplicate-props": 1,
+    "react/jsx-no-literals": 0,
+    "react/jsx-no-undef": 1,
+    "react/jsx-pascal-case": 1,
+    "react/jsx-sort-prop-types": 0,
+    "react/jsx-sort-props": 0,
+    "react/jsx-uses-react": 1,
+    "react/jsx-uses-vars": 1,
+    "react/no-danger": 1,
+    "react/no-did-mount-set-state": 1,
+    "react/no-did-update-set-state": 1,
+    "react/no-direct-mutation-state": 1,
+    "react/no-multi-comp": 1,
+    "react/no-set-state": 0,
+    "react/no-unknown-property": 1,
+    "react/prefer-es6-class": 1,
+    "react/prop-types": 1,
+    "react/react-in-jsx-scope": 1,
+    "react/require-extension": "off",
+    "react/self-closing-comp": 1,
+    "react/sort-comp": 1,
+    "react/jsx-wrap-multilines": 1
   }
 }

.nvmrc

@@ -1 +1 @@
-14.16.1
+16.13.1

.travis.yml

@@ -1,11 +1,11 @@
 language: node_js
 node_js:
-  - "14.16.1"
+  - "16.13.1"
 sudo: true
 
 branches:
   only:
-  - master
+    - master
 
 deploy:
   # deploy app as api server
@@ -22,7 +22,7 @@ deploy:
     app: code-editor-react
 
 after_deploy:
-# change settings in Procfile for client
-# web: node src/server/index.js
-# web: node server.js
-- bash ./procfile_upd.sh
+  # change settings in Procfile for client
+  # web: node src/server/index.js
+  # web: node server.js
+  - bash ./procfile_upd.sh