chore: add tests for ESLint 8

.eslintrc.js

@@ -1,9 +1,9 @@
 "use strict";
 
-var fs = require("fs");
-var path = require("path");
-var PACKAGE_NAME = require("./package").name;
-var SYMLINK_LOCATION = path.join(__dirname, "node_modules", PACKAGE_NAME);
+const fs = require("fs");
+const path = require("path");
+const PACKAGE_NAME = require("./package").name;
+const SYMLINK_LOCATION = path.join(__dirname, "node_modules", PACKAGE_NAME);
 
 // Symlink node_modules/eslint-plugin-markdown to this directory so that ESLint
 // resolves this plugin name correctly.
@@ -12,37 +12,37 @@ if (!fs.existsSync(SYMLINK_LOCATION)) {
 }
 
 module.exports = {
-    "root": true,
+    root: true,
 
-    "parserOptions": {
-        "ecmaVersion": 2018
+    parserOptions: {
+        ecmaVersion: 2018
     },
 
-    "plugins": [
+    plugins: [
         PACKAGE_NAME
     ],
 
-    "env": {
-        "node": true
+    env: {
+        node: true
     },
 
-    "extends": "eslint",
+    extends: "eslint",
 
-    "ignorePatterns": ["examples"],
+    ignorePatterns: ["examples"],
 
-    "overrides": [
+    overrides: [
         {
-            "files": ["**/*.md"],
-            "processor": "markdown/markdown"
+            files: ["**/*.md"],
+            processor: "markdown/markdown"
         },
         {
-            "files": ["**/*.md/*.js"],
-            "parserOptions": {
-                "ecmaFeatures": {
-                    "impliedStrict": true
+            files: ["**/*.md/*.js"],
+            parserOptions: {
+                ecmaFeatures: {
+                    impliedStrict: true
                 }
             },
-            "rules": {
+            rules: {
                 "lines-around-comment": "off"
             }
         }

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
     - name: Install Node.js
       uses: actions/setup-node@v2
     - name: Install Packages
@@ -27,23 +27,39 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        node-version: ["8.10.0", 8.x, 10.x, 12.x, 13.x, 14.x]
+        eslint: [6, 7, 8]
+        node: [8.10, 8, 10, 12, 14, 16]
+        exclude:
+          - eslint: 8
+            node: 10
+          - eslint: 8
+            node: 8
+          - eslint: 8
+            node: 8.10
+          - eslint: 7
+            node: 8
+          - eslint: 7
+            node: 8.10
         include:
-        - os: windows-latest
-          node: "12.x"
-        - os: macOS-latest
-          node: "12.x"
+          - os: windows-latest
+            eslint: 8
+            node: 16
+          - os: macOS-latest
+            eslint: 8
+            node: 16
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
-    - name: Install Node.js ${{ matrix.node-version }}
+      uses: actions/checkout@v2
+    - name: Install Node.js ${{ matrix.node }}
       uses: actions/setup-node@v2
       with:
-        node-version: ${{ matrix.node-version }}
+        node-version: ${{ matrix.node }}
     - name: Install Packages
       run: npm install
       env:
         CI: true
+    - name: Install ESLint@${{  matrix.eslint  }}
+      run: npm install eslint@${{  matrix.eslint  }}
     - name: Test
       run: npm run test-cov

package.json

@@ -38,10 +38,10 @@
   ],
   "devDependencies": {
     "chai": "^4.2.0",
-    "eslint": "^6.8.0",
-    "eslint-config-eslint": "^6.0.0",
-    "eslint-plugin-jsdoc": "^15.9.5",
-    "eslint-plugin-node": "^9.0.0",
+    "eslint": "^8.1.0",
+    "eslint-config-eslint": "^7.0.0",
+    "eslint-plugin-jsdoc": "^37.0.3",
+    "eslint-plugin-node": "^11.1.0",
     "eslint-release": "^3.1.2",
     "mocha": "^6.2.2",
     "nyc": "^14.1.1"
@@ -50,9 +50,9 @@
     "mdast-util-from-markdown": "^0.8.5"
   },
   "peerDependencies": {
-    "eslint": ">=6.0.0"
+    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
   },
   "engines": {
-    "node": "^8.10.0 || ^10.12.0 || >= 12.0.0"
+    "node": "^8.10.0 || ^10.12.0 || >=12.0.0"
   }
 }