feat: support ESLint 8.x

Author: MichaelDeBoey

.github/workflows/CI.yml

@@ -6,13 +6,17 @@ jobs:
   main:
     strategy:
       matrix:
-        node: [10.12, 10, 12.0, 12, 14, 15]
+        eslint: [7, 8]
+        node: [10.12, 10, 12.0, 12, 14, 16]
+        exclude:
+          - eslint: 8
+            node: 10
+          - eslint: 8
+            node: 10.12
     runs-on: ubuntu-latest
     steps:
       - name: 🛑 Cancel Previous Runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ secrets.GITHUB_TOKEN }}
+        uses: styfle/[email protected]
 
       - name: ⬇️ Checkout repo
         uses: actions/checkout@v2
@@ -22,10 +26,13 @@ jobs:
         with:
           node-version: ${{ matrix.node }}
 
-      - name: 📥 Download deps
+      - name: 📥 Download dependencies
         uses: bahmutov/npm-install@v1
         with:
           useLockFile: false
 
+      - name: 📥 Install ESLint v${{ matrix.eslint }}
+        run: npm install eslint@${{ matrix.eslint }}
+
       - name: ▶️ Run test script
         run: npm run test -- --runInBand

package.json

@@ -25,20 +25,20 @@
   "dependencies": {},
   "devDependencies": {
     "doctoc": "^2.0.0",
-    "eslint": "^7.23.0",
-    "eslint-config-prettier": "^8.1.0",
-    "eslint-plugin-eslint-plugin": "^3.0.0",
-    "eslint-plugin-jest": "^24.3.4",
+    "eslint": "^8.0.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-eslint-plugin": "^4.0.0-0",
+    "eslint-plugin-jest": "^24.7.0",
     "eslint-plugin-node": "^11.1.0",
-    "eslint-plugin-prettier": "^3.3.1",
+    "eslint-plugin-prettier": "^3.4.1",
     "husky": "^6.0.0",
     "jest": "^26.6.3",
-    "jest-runner-eslint": "^0.10.0",
+    "jest-runner-eslint": "^0.11.1",
     "lint-staged": "^10.5.4",
     "prettier": "^2.2.1"
   },
   "peerDependencies": {
-    "eslint": "^7.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "engines": {
     "node": "^10.12.0 || >=12.0.0"