Set up linters and its tools

.eslintrc.json

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+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "jest": true
+  },
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "module"
+  },
+  "extends": ["airbnb-base"],
+  "rules": {
+    "no-shadow": "off",
+    "no-param-reassign": "off",
+    "eol-last": "off",
+    "import/extensions": [ 1, {
+      "js": "always", "json": "always"
+    }]
+  },
+  "ignorePatterns": [
+    "dist/",
+    "build/"
+  ]
+}

.gitbub/workflows/linters.yml

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+name: Linters
+
+on: pull_request
+
+env:
+  FORCE_COLOR: 1
+
+jobs:
+  lighthouse:
+    name: Lighthouse
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - name: Setup Lighthouse
+        run: npm install -g @lhci/[email protected]
+      - name: Lighthouse Report
+        run: lhci autorun --upload.target=temporary-public-storage --collect.staticDistDir=.
+  webhint:
+    name: Webhint
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - name: Setup Webhint
+        run: |
+          npm install --save-dev [email protected]
+          [ -f .hintrc ] || wget https://raw.githubusercontent.com/microverseinc/linters-config/master/html-css/.hintrc
+      - name: Webhint Report
+        run: npx hint --telemetry=off
+  stylelint:
+    name: Stylelint
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: "12.x"
+      - name: Setup Stylelint
+        run: |
+          npm install --save-dev [email protected] [email protected] [email protected] [email protected]
+          [ -f .stylelintrc.json ] || wget https://raw.githubusercontent.com/microverseinc/linters-config/master/html-css/.stylelintrc.json
+      - name: Stylelint Report
+        run: npx stylelint "**/*.{css,scss}"

.hintrc

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+{
+  "connector": {
+    "name": "local",
+    "options": {
+      "pattern": ["**", "!.git/**", "!node_modules/**"]
+    }
+  },
+  "extends": ["development"],
+  "formatters": ["stylish"],
+  "hints": [
+    "button-type",
+    "disown-opener",
+    "html-checker",
+    "meta-charset-utf-8",
+    "meta-viewport",
+    "no-inline-styles:error"
+  ]
+}

.stylelintrc.json

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+{
+  "extends": ["stylelint-config-standard"],
+  "plugins": ["stylelint-scss", "stylelint-csstree-validator"],
+  "rules": {
+    "at-rule-no-unknown": null,
+    "scss/at-rule-no-unknown": true,
+    "csstree/validator": true
+  },
+  "ignoreFiles": ["build/**", "dist/**", "**/reset*.css", "**/bootstrap*.css"]
+}