chore: upgrade eslint to v9

BREAKING CHANGE: eslint upgrade to v9

eslint.config.mjs

@@ -0,0 +1,68 @@
+// @ts-check
+import globals from 'globals';
+import importPlugin from 'eslint-plugin-import';
+import eslintTerrestris from '@terrestris/eslint-config-typescript';
+import eslint from '@eslint/js';
+import tsEslint from 'typescript-eslint';
+import stylisticEslint from '@stylistic/eslint-plugin'
+
+export default tsEslint.config({
+  extends: [
+    eslint.configs.recommended,
+    ...tsEslint.configs.recommended,
+    ...tsEslint.configs.stylistic,
+    importPlugin.flatConfigs.recommended
+  ],
+  files: [
+    'src/**/*.ts',
+    'spec/**/*.spec.ts'
+  ],
+  ignores: [
+    '**/*.spec.ts',
+    'dist/**/*.{js,d,ts}'
+  ],
+  languageOptions: {
+    ecmaVersion: 2022,
+    globals: globals.browser,
+    parserOptions: {
+      project: true,
+      tsconfigRootDir: import.meta.dirname
+    },
+  },
+  plugins: {
+    '@stylistic': stylisticEslint
+  },
+  rules: {
+    ...eslintTerrestris.rules,
+    '@typescript-eslint/member-ordering': 'off',
+    '@typescript-eslint/no-empty-object-type': 'off',
+    '@typescript-eslint/no-unused-vars': 'warn',
+    'import/no-unresolved': 'off',
+    'import/named': 'off',
+    'import/order': ['warn', {
+      groups: [
+        'builtin',
+        'external',
+        'parent',
+        'sibling',
+        'index',
+        'object'
+      ],
+      pathGroups: [{
+        pattern: 'react',
+        group: 'external',
+        position: 'before'
+      }, {
+        pattern: '@terrestris/**',
+        group: 'external',
+        position: 'after'
+      }],
+      pathGroupsExcludedImportTypes: ['react'],
+      'newlines-between': 'always-and-inside-groups',
+      alphabetize: {
+        order: 'asc',
+        caseInsensitive: true
+      }
+    }]
+  }
+});