feat: target ESLint v9

lib/linter/.eslintrc.js

@@ -1,5 +1,5 @@
 'use strict';
 
-module.exports = {
-    extends: 'plugin:@hapi/module'
-};
+const HapiPlugin = require('@hapi/eslint-plugin');
+
+module.exports = [...HapiPlugin.configs.module];

lib/linter/index.js

@@ -18,12 +18,9 @@ exports.lint = async function () {
 
     const options = process.argv[2] ? JSON.parse(process.argv[2]) : undefined;
 
-    if (!Fs.existsSync('.eslintrc.js') &&
-        !Fs.existsSync('.eslintrc.cjs') && // Needed for projects with "type": "module"
-        !Fs.existsSync('.eslintrc.yaml') &&
-        !Fs.existsSync('.eslintrc.yml') &&
-        !Fs.existsSync('.eslintrc.json') &&
-        !Fs.existsSync('.eslintrc')) {
+    if (!Fs.existsSync('eslint.config.js') &&
+        !Fs.existsSync('eslint.config.cjs') && // Needed for projects with "type": "module"
+        !Fs.existsSync('eslint.config.mjs')) {
         configuration.overrideConfigFile = Path.join(__dirname, '.eslintrc.js');
     }
 
@@ -32,17 +29,30 @@ exports.lint = async function () {
     }
 
     if (!configuration.extensions) {
-        configuration.extensions = ['.js', '.cjs', '.mjs'];
+        const extensions = ['js', 'cjs', 'mjs'];
 
         if (configuration.typescript) {
-            configuration.extensions.push('.ts');
+            extensions.push('ts');
         }
+
+        configuration.baseConfig = configuration.baseConfig || [];
+        configuration.baseConfig.unshift({
+            files: [`**/*.{${extensions.join(',')}}`],
+        });
     }
 
     if (configuration.typescript) {
         delete configuration.typescript;
     }
 
+    if (configuration.ignores) {
+        configuration.baseConfig = configuration.baseConfig || [];
+        configuration.baseConfig.unshift({
+            ignores: configuration.ignores
+        });
+        delete configuration.ignores;
+    }
+
     let results;
     try {
         const eslint = new Eslint.ESLint(configuration);

package.json

@@ -25,7 +25,7 @@
         "@hapi/eslint-plugin": "^6.0.0",
         "@hapi/hoek": "^11.0.2",
         "diff": "^5.0.0",
-        "eslint": "8.x.x",
+        "eslint": "9.x.x",
         "find-rc": "4.x.x",
         "globby": "^11.1.0",
         "handlebars": "4.x.x",
@@ -48,6 +48,7 @@
     "devDependencies": {
         "@hapi/code": "^9.0.0",
         "@hapi/somever": "^4.0.0",
+        "@types/eslint": "^9.6.0",
         "@types/node": "^18.11.17",
         "@typescript-eslint/parser": "^5.62.0",
         "cpr": "3.x.x",