build: migrate eslint.config.js to typescript

This change migrates the eslint config for the repo to typescript.  This is in support of the larger migration to typescript.  In order for us to continue to consume the plugin locally, after it's been converted to typescript (without having to build first), we'll need to be loading the config from typescript.

Since I needed to update eslint to support, I took the opportunity to all of the other plugins too (except unicorn).

I also removed a rule disable that had a note on it about dropping after we dropped support for node 14.

Author: michaelfaith

eslint.config.ts

@@ -2,8 +2,10 @@ import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import js from '@eslint/js';
 import { FlatCompat } from '@eslint/eslintrc';
+import { defineConfig } from 'eslint/config';
 import markdown from 'eslint-plugin-markdown';
 import pluginN from 'eslint-plugin-n';
+// @ts-expect-error - eslint-plugin is not typed yet
 import eslintPlugin from './lib/index.js';
 
 const dirname = path.dirname(fileURLToPath(import.meta.url));
@@ -12,7 +14,7 @@ const compat = new FlatCompat({
   recommendedConfig: js.configs.recommended,
 });
 
-export default [
+export default defineConfig([
   // Global ignores
   {
     ignores: ['node_modules', 'coverage'],
@@ -39,7 +41,6 @@ export default [
       'unicorn/no-array-reduce': 'off',
       'unicorn/no-null': 'off',
       'unicorn/prefer-module': 'off',
-      'unicorn/prefer-node-protocol': 'off', // TODO: enable once we drop support for Node 14.17.
       'unicorn/prevent-abbreviations': 'off',
     },
   },
@@ -82,4 +83,4 @@ export default [
       'unicorn/filename-case': 'off',
     },
   },
-];
+]);

lib/rules/require-meta-docs-url.js

@@ -6,7 +6,7 @@
 // Requirements
 // -----------------------------------------------------------------------------
 
-import path from 'path';
+import path from 'node:path';
 import * as utils from '../utils.js';
 import { getStaticValue } from '@eslint-community/eslint-utils';
 

package.json

@@ -50,7 +50,9 @@
     "@eslint/eslintrc": "^3.0.2",
     "@eslint/js": "^9.31.0",
     "@release-it/conventional-changelog": "^9.0.3",
+    "@types/eslint-plugin-markdown": "^2.0.2",
     "@types/estree": "^1.0.8",
+    "@types/node": "^20.19.0",
     "@typescript-eslint/parser": "^8.34.1",
     "@typescript-eslint/utils": "^8.34.1",
     "@vitest/coverage-istanbul": "^3.2.4",
@@ -66,6 +68,7 @@
     "eslint-scope": "^8.0.1",
     "espree": "^10.0.1",
     "husky": "^9.1.7",
+    "jiti": "^2.4.2",
     "lodash": "^4.17.21",
     "markdownlint-cli": "^0.43.0",
     "npm-package-json-lint": "^8.0.0",
@@ -97,6 +100,5 @@
     "npm": {
       "skipChecks": true
     }
-  },
-  "packageManager": "[email protected]+sha512.e08cbfa5d0c47e148d9d92965513af3d06a42ff99b6e0e82a7d10512858d0fb680a03c1e6772d369a2305c79306c9257989a3576b7057d6877469c9a1c7563f0"
+  }
 }

tests/lib/rules/no-property-in-node.js

@@ -1,6 +1,6 @@
 import { RuleTester } from 'eslint';
-import path from 'path';
-import { fileURLToPath } from 'url';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
 import rule from '../../../lib/rules/no-property-in-node.js';
 import parser from '@typescript-eslint/parser';
 

tsconfig.json

@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "rootDir": ".",
+    "declaration": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "noEmit": true,
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "target": "ES2022"
+  }
+}