feat(docs): Add eslint and prettier GH Actions.

.github/workflows/doc-checks.yml

@@ -0,0 +1,35 @@
+name: doc-checks
+
+on:
+  push:
+    paths:
+      - "docs/**"
+  pull_request:
+    paths:
+      - "docs/**"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    name: ESLint
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: bahmutov/npm-install@v1
+        with:
+          working-directory: docs
+      - name: ESLint
+        run: npm run lint
+        working-directory: docs
+  prettier:
+    runs-on: ubuntu-latest
+    name: Prettier
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: bahmutov/npm-install@v1
+        with:
+          working-directory: docs
+      - name: Prettier Check
+        run: npm run prettier:check
+        working-directory: docs

docs/package.json

@@ -8,7 +8,10 @@
     "serve": "docusaurus serve",
     "swizzle": "docusaurus swizzle",
     "deploy": "docusaurus deploy",
-    "clear": "docusaurus clear"
+    "clear": "docusaurus clear",
+    "lint": "eslint . --ext js,jsx,md,mdx",
+    "prettier:check": "prettier --check .",
+    "prettier:format": "prettier --write ."
   },
   "dependencies": {
     "@docusaurus/core": "^2.0.0-alpha.66",