migrate eslint config to new format required since 9.0.0

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

.eslintignore

@@ -0,0 +1,58 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
+const {defineConfig, globalIgnores} = require('eslint/config');
+const {fixupConfigRules, fixupPluginRules} = require('@eslint/compat');
+const typescriptEslint = require('@typescript-eslint/eslint-plugin');
+const jestPlugin = require('eslint-plugin-jest');
+const prettier = require('eslint-plugin-prettier');
+const globals = require('globals');
+const tsParser = require('@typescript-eslint/parser');
+const js = require('@eslint/js');
+const {FlatCompat} = require('@eslint/eslintrc');
+
+// __dirname and __filename exist natively in CommonJS
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all
+});
+
+module.exports = defineConfig([
+  globalIgnores(['dist/**/*', 'coverage/**/*', 'node_modules/**/*']),
+  {
+    // prettier-ignore
+    extends: fixupConfigRules(
+      compat.extends(
+        'eslint:recommended',
+        'plugin:@typescript-eslint/eslint-recommended',
+        'plugin:@typescript-eslint/recommended',
+        'plugin:jest/recommended',
+        'plugin:prettier/recommended'
+      )
+    ),
+
+    plugins: {
+      '@typescript-eslint': fixupPluginRules(typescriptEslint),
+      jest: fixupPluginRules(jestPlugin),
+      prettier: fixupPluginRules(prettier)
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.jest
+      },
+      parser: tsParser,
+      ecmaVersion: 'latest',
+      sourceType: 'module'
+    },
+
+    rules: {
+      '@typescript-eslint/no-require-imports': [
+        'error',
+        {
+          allowAsImport: true
+        }
+      ]
+    }
+  }
+]);

.eslintrc.json

@@ -38,6 +38,9 @@
     "semver": "^7.7.3"
   },
   "devDependencies": {
+    "@eslint/compat": "^2.0.0",
+    "@eslint/eslintrc": "^3.3.3",
+    "@eslint/js": "^9.39.2",
     "@types/node": "^20.19.27",
     "@typescript-eslint/eslint-plugin": "^8.50.0",
     "@typescript-eslint/parser": "^8.50.0",

eslint.config.js

@@ -1238,6 +1238,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@eslint/compat@npm:^2.0.0":
+  version: 2.0.0
+  resolution: "@eslint/compat@npm:2.0.0"
+  dependencies:
+    "@eslint/core": "npm:^1.0.0"
+  peerDependencies:
+    eslint: ^8.40 || 9
+  peerDependenciesMeta:
+    eslint:
+      optional: true
+  checksum: 10/b1f63053ac643d47ce44d354a65e095e2b59f6b6aee4d6ca08cfa3b0800fc784bbd6895494ba726479faf9591e8e2887dc13c7a776f0d9627f0fdbf7faa34fdb
+  languageName: node
+  linkType: hard
+
 "@eslint/config-array@npm:^0.21.1":
   version: 0.21.1
   resolution: "@eslint/config-array@npm:0.21.1"
@@ -1267,7 +1281,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@eslint/eslintrc@npm:^3.3.1":
+"@eslint/core@npm:^1.0.0":
+  version: 1.0.0
+  resolution: "@eslint/core@npm:1.0.0"
+  dependencies:
+    "@types/json-schema": "npm:^7.0.15"
+  checksum: 10/0e2fc001ec3a12a9d6cd5de8eaf6c9eb1deec892777fed04e59eae0f3073c69988451eda32623524db76adaa7075747a8de5aa39b91b9084c711db452194eae9
+  languageName: node
+  linkType: hard
+
+"@eslint/eslintrc@npm:^3.3.1, @eslint/eslintrc@npm:^3.3.3":
   version: 3.3.3
   resolution: "@eslint/eslintrc@npm:3.3.3"
   dependencies:
@@ -1284,7 +1307,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@eslint/js@npm:9.39.2":
+"@eslint/js@npm:9.39.2, @eslint/js@npm:^9.39.2":
   version: 9.39.2
   resolution: "@eslint/js@npm:9.39.2"
   checksum: 10/6b7f676746f3111b5d1b23715319212ab9297868a0fa9980d483c3da8965d5841673aada2d5653e85a3f7156edee0893a7ae7035211b4efdcb2848154bb947f2
@@ -3606,6 +3629,9 @@ __metadata:
     "@actions/core": "npm:^1.11.1"
     "@actions/github": "npm:^6.0.1"
     "@docker/actions-toolkit": "npm:^0.68.0"
+    "@eslint/compat": "npm:^2.0.0"
+    "@eslint/eslintrc": "npm:^3.3.3"
+    "@eslint/js": "npm:^9.39.2"
     "@renovate/pep440": "npm:^1.0.0"
     "@types/node": "npm:^20.19.27"
     "@typescript-eslint/eslint-plugin": "npm:^8.50.0"