Switch to flat config format

.editorconfig

@@ -1,11 +1,16 @@
 root = true
 
 [*]
-indent_style = space
+indent_style = tab
 indent_size = 2
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
 
 [*.md]
-trim_trailing_whitespace = false
+trim_trailing_whitespace = false
+
+# YAML files cannot have tabs
+# @see https://yaml.org/faq.html
+[*.yml]
+indent_style = space

.github/workflows/ci.yml

@@ -7,26 +7,17 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  lint:
+  validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - name: Use Node.js 18
-        uses: actions/setup-node@v3
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - name: Setup Node
+        uses: actions/setup-node@v4
         with:
-          node-version: 18
-      - name: Cache node modules
-        uses: actions/cache@v3
-        with:
-          path: node_modules
-          key: ${{ runner.OS }}-build-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.OS }}-build-${{ env.cache-name }}-
-            ${{ runner.OS }}-build-
-            ${{ runner.OS }}-
+          node-version: 'lts/*'
+          cache: 'npm'
       - name: Install Dependencies
-        run: npm ci && npm link && npm link @cloudfour/eslint-plugin
-      - name: Run Build
-        run: npm run build
+        run: npm ci
       - name: Run Lint
-        run: npm run check-lint
+        run: npm run lint:check

.gitignore

@@ -1,5 +1,2 @@
 node_modules
-/dist/*.js
-.vscode/
-/fixtures/repos
-/tmp-eslint-config
+.vscode

.nvmrc

@@ -0,0 +1 @@
+lts/*

.renovaterc.json

@@ -1,16 +1,16 @@
 {
-  "extends": ["config:base", ":automergeMinor"],
-  "reviewers": ["team:dev"],
-  "dependencyDashboard": true,
-  "stabilityDays": 4,
-  "packageRules": [
-    {
-      "matchDepTypes": ["dependencies"],
-      "rangeStrategy": "bump"
-    },
-    {
-      "matchPackagePatterns": ["eslint"],
-      "automerge": false
-    }
-  ]
+	"extends": ["config:base", ":automergeMinor"],
+	"reviewers": ["team:dev"],
+	"dependencyDashboard": true,
+	"stabilityDays": 4,
+	"packageRules": [
+		{
+			"matchDepTypes": ["dependencies"],
+			"rangeStrategy": "bump"
+		},
+		{
+			"matchPackagePatterns": ["eslint"],
+			"automerge": false
+		}
+	]
 }