add action to install deps and run prettier

.github/workflows/github-actions-demo.yml

@@ -1,18 +1,25 @@
-name: GitHub Actions Demo
-run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
+name: Node.js CI
+
 on: [push]
+
 jobs:
-  Explore-GitHub-Actions:
+  build:
     runs-on: ubuntu-latest
+
     steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
-      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
-      - name: Check out repository code
-        uses: actions/checkout@v3
-      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
-      - name: List files in the repository
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Use Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: 14
+
+      - name: Install dependencies
         run: |
-          ls ${{ github.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."
+          npm ci
+
+      - name: Prettier Action
+        # You may pin to the exact commit or the version.
+        # uses: creyD/prettier_action@6602189cf8bac1ce73ffe601925f6127ab7f21ac
+        uses: creyD/prettier_action@v4.2

.prettierrc

@@ -2,6 +2,6 @@
   "semi": true,
   "trailingComma": "all",
   "singleQuote": true,
-  "printWidth": 90,
+  "printWidth": 80,
   "plugins": ["prettier-plugin-jsdoc"]
 }