Forbid Rust lints and enforce strict typed TypeScript linting

1 files changed, 53 insertions, 0 deletions

diff --git a/eslint.config.ts b/eslint.config.ts
new file mode 100644
index 0000000..4ad21d6
--- /dev/null
+++ b/eslint.config.ts
@@ -0,0 +1,53 @@
+// Copyright (C) 2026 Doan Luu Duc Tai <doan@luuduct.ai>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import js from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import { defineConfig } from 'eslint/config';
+import { fileURLToPath } from 'node:url';
+
+const root = fileURLToPath(new URL('../../../', import.meta.url));
+
+export default defineConfig(
+    { ignores: ['var/**', '.tools/**', 'node_modules/**', 'target/**', 'bin/**', 'dist/**'] },
+    {
+        files: ['**/*.ts'],
+        extends: [js.configs.recommended, tseslint.configs.strictTypeChecked, tseslint.configs.stylisticTypeChecked],
+        languageOptions: {
+            parserOptions: {
+                project: ['tsconfig.browser.json', 'tsconfig.worker.json', 'tsconfig.tests.json', 'tsconfig.tools.json'],
+                tsconfigRootDir: root,
+            },
+        },
+        linterOptions: { noInlineConfig: true, reportUnusedDisableDirectives: 'error', reportUnusedInlineConfigs: 'error' },
+        rules: {
+            '@typescript-eslint/ban-ts-comment': ['error', { 'ts-check': true, 'ts-expect-error': true, 'ts-ignore': true, 'ts-nocheck': true }],
+            '@typescript-eslint/consistent-type-assertions': ['error', { assertionStyle: 'never' }],
+            '@typescript-eslint/explicit-function-return-type': 'error',
+            '@typescript-eslint/explicit-module-boundary-types': 'error',
+            '@typescript-eslint/no-unsafe-type-assertion': 'error',
+            '@typescript-eslint/no-unsafe-call': 'error',
+            '@typescript-eslint/no-floating-promises': ['error', { ignoreVoid: false }],
+            '@typescript-eslint/no-misused-promises': 'error',
+            '@typescript-eslint/strict-boolean-expressions': ['error', { allowString: false, allowNumber: false, allowNullableObject: false, allowNullableBoolean: false, allowNullableString: false, allowNullableNumber: false, allowAny: false }],
+            '@typescript-eslint/switch-exhaustiveness-check': ['error', { requireDefaultForNonUnion: true }],
+            '@typescript-eslint/use-unknown-in-catch-callback-variable': 'error',
+            'no-restricted-syntax': ['error', { selector: 'TSAnyKeyword', message: 'Use unknown and validate untrusted values.' }, { selector: 'TSNonNullExpression', message: 'Check presence explicitly.' }],
+            'no-eval': 'error',
+            'no-implied-eval': 'error',
+            'eqeqeq': ['error', 'always'],
+        },
+    },
+);