chore(deps-dev): bump to ESLint v9

eslint.config.mjs

@@ -0,0 +1,157 @@
+/*
+Copyright 2021 Bonitasoft S.A.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import noticePlugin from "eslint-plugin-notice";
+import importPlugin from "eslint-plugin-import";
+import unicornPlugin from "eslint-plugin-unicorn";
+
+import eslintPluginImport from 'eslint-plugin-import';
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended';
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+
+export default [
+  {
+    // ...eslintPluginImport.configs.recommended, // is not working for now with ESLint v9
+    // ...unicornPlugin.configs.recommended, // is not working for now with ESLint v9
+    ...eslintPluginPrettierRecommended, // Enables eslint-plugin-prettier, eslint-config-prettier and prettier/prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration.
+
+    plugins: {
+      notice: noticePlugin,
+      unicorn: unicornPlugin,
+      import: importPlugin
+    },
+    languageOptions: {
+      parserOptions: {
+        ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
+        sourceType: 'module', // Allows for the use of imports
+      },
+    },
+    rules: {
+      'notice/notice': ['error', {templateFile: 'config/license-header.js', onNonMatchingHeader: 'replace'}],
+      'no-console': ['error', {allow: ['warn', 'error']}],
+      'unicorn/filename-case': [
+        'error',
+        {
+          cases: {
+            camelCase: true,
+            kebabCase: true,
+            pascalCase: true,
+            snakeCase: true,
+          },
+        },
+      ],
+      'import/newline-after-import': ['error', {count: 1}],
+      'import/first': 'error',
+      'import/order': [
+        'error',
+        {
+          groups: ['type', 'builtin', 'external', 'parent', 'sibling', 'index', 'internal'],
+          'newlines-between': 'always',
+          alphabetize: {
+            order: 'asc',
+            orderImportKind: 'asc',
+            caseInsensitive: true,
+          },
+        },
+      ],
+      'unicorn/prefer-keyboard-event-key': 'off', // 'key' doesn't exist in the used ES version
+      'unicorn/prefer-module': 'off', // We don't want to change a working configuration
+      'unicorn/prefer-string-replace-all': 'off', // String#replaceAll() doesn't exist in the used ES version
+      'unicorn/no-new-array': 'off', // In contradiction with unicorn/new-for-builtins: Use `new Array()` instead of `Array()`
+      'unicorn/no-null': 'off', // We don't know the impact on mxGraph code
+      'unicorn/no-useless-undefined': 'off', // The "undefined" value is useful where we use it and change some mxGraph code
+    },
+    ignores: [
+      '.github/',
+      '.idea/',
+      '/build/',
+      '/config/',
+      '/dist/',
+      'node_modules/',
+      'scripts/utils/dist/',
+      'test/performance/data/',
+    ],
+  },
+
+  // typescript
+  { ...eslint.configs.recommended, files: ['**/*.ts', '**/*.tsx'] },
+  ...tseslint.configs.recommended.map(conf => ({ ...conf, files: ['**/*.ts', '**/*.tsx'] })),
+  /** @type {import('@typescript-eslint/utils').TSESLint.FlatConfig.ConfigFile} */
+  {
+    ...tseslint.configs.stylistic,
+    // ...eslintPluginImport.configs.typescript, // is not working for now with ESLint v9
+    ...eslintPluginPrettierRecommended, // Enables eslint-plugin-prettier, eslint-config-prettier and prettier/prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration.
+
+    files: ['*.ts'],
+    settings: {
+      'import/resolver': {
+        typescript: {
+          alwaysTryTypes: true, // always try to resolve types under `<root>@types` directory even it doesn't contain any source code, like `@types/unist`
+          project: '**/tsconfig.json',
+        },
+      },
+    },
+    languageOptions: {
+      parserOptions: {
+        // This setting is required if you want to use rules which require type information
+        // https://typescript-eslint.io/packages/parser/#project
+        project: ['./tsconfig.json', './tsconfig.test.json', './tsconfig.utils.json'],
+      },
+    },
+    rules: {
+      '@typescript-eslint/explicit-function-return-type': [
+        'error',
+        {
+          allowExpressions: true,
+          allowTypedFunctionExpressions: true,
+        },
+      ],
+      '@typescript-eslint/explicit-member-accessibility': [
+        'error',
+        {
+          accessibility: 'no-public',
+        },
+      ],
+      '@typescript-eslint/consistent-type-exports': [
+        'error',
+        {
+          fixMixedExportsWithInlineTypeSpecifier: true,
+        },
+      ],
+      '@typescript-eslint/consistent-type-imports': ['error'],
+      // We choose to disable it and choose later if we want to enable it. See https://github.com/process-analytics/bpmn-visualization-js/pull/2821.
+      '@typescript-eslint/consistent-type-definitions': 'off',
+      '@typescript-eslint/dot-notation': 'error',
+
+      'require-await': 'off', // disable the base eslint rule as it can report incorrect errors when '@typescript-eslint/require-await' is enabled (see official documentation)
+      '@typescript-eslint/require-await': 'error',
+      '@typescript-eslint/no-floating-promises': 'error',
+      '@typescript-eslint/no-misused-promises': 'error',
+
+      '@typescript-eslint/restrict-plus-operands': 'error',
+
+      // The following lines are commented, because they show errors on files other than the demo:
+      // '@typescript-eslint/no-base-to-string': 'error',
+      // '@typescript-eslint/no-unsafe-assignment': 'error',
+      // '@typescript-eslint/no-unsafe-argument': 'error',
+      // '@typescript-eslint/no-unsafe-member-access': 'error',
+      // '@typescript-eslint/restrict-template-expressions': 'error',
+      // '@typescript-eslint/unbound-method': 'error',
+    },
+  },
+];