Add linting

.gitignore

@@ -21,3 +21,4 @@
 !.gitignore
 !.gitattributes
 !map.js
+!eslint.config.mjs

eslint.config.mjs

@@ -0,0 +1,41 @@
+import eslint from '@eslint/js'
+import tseslint from 'typescript-eslint'
+
+export default tseslint.config(
+  {
+    ignores: [
+      'examples/**',
+      'tap-snapshots/**',
+      'dist/**',
+      'eslint.config.mjs',
+    ],
+  },
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  ...tseslint.configs.recommendedTypeChecked,
+  {
+    languageOptions: {
+      parserOptions: {
+        projectService: true,
+        tsconfigRootDir: import.meta.dirname,
+      },
+    },
+  },
+  {
+    files: ['**/test/**/*.ts'],
+    rules: {
+      'no-unexpected-multiline': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-floating-promises': 'off',
+      '@typescript-eslint/no-non-null-assertion': 'off',
+      '@typescript-eslint/require-await': 'off',
+      '@typescript-eslint/no-unused-vars': 'off',
+      '@typescript-eslint/ban-ts-comment': [
+        'error',
+        {
+          minimumDescriptionLength: 0,
+        },
+      ],
+    },
+  },
+)