Merge pull request #1447 from mathjax/tests/linting

Introduce linting and formatting on testsuite

Author: zorkow

eslint.config.mjs

@@ -5,32 +5,39 @@ import tseslint from "typescript-eslint";
 // For documentation see
 // https://typescript-eslint.io/packages/typescript-eslint#config
 
-export default tseslint.config({
-  extends: [
-    eslint.configs.recommended,
-    jsdoc.configs['flat/recommended'],
-    ...tseslint.configs.recommended
-  ],
-  languageOptions: {
-    parserOptions: {
-      project: true,
+export default tseslint.config(
+  {
+    extends: [
+      eslint.configs.recommended,
+      jsdoc.configs['flat/recommended'],
+      ...tseslint.configs.recommended
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: true,
+      }
+    },
+    files: ['**/*.ts'],
+    ignores: ["**/*.d.ts", "**/*.js", "**/cjs/*"],
+    "rules": {
+      "@typescript-eslint/prefer-includes": "error",
+      "@typescript-eslint/no-explicit-any": "off",
+      "@typescript-eslint/no-unused-vars": ["error",
+                                            { "varsIgnorePattern": "^_", "argsIgnorePattern": "^_",
+                                              "caughtErrorsIgnorePattern": "^_" }
+                                           ],
+      "@typescript-eslint/no-empty-object-type": ["error", {"allowInterfaces": "with-single-extends"}],
+      "@typescript-eslint/no-unused-expressions": ["error", { "allowTernary": true }],
+      "prefer-const": ["error", {"destructuring": "all"}],
+      "jsdoc/tag-lines": ["warn", "always", {"count": 0, "startLines": 1}],
+      "jsdoc/reject-any-type": "off",
+      "jsdoc/reject-function-type": "off"
     }
   },
-  files: ['ts/**/*.ts'],
-  ignores: ["**/*.d.ts", "**/*.js", "**/cjs/*"],
-  "rules": {
-    "@typescript-eslint/prefer-includes": "error",
-    "@typescript-eslint/no-explicit-any": "off",
-    "@typescript-eslint/no-unused-vars": ["error",
-                                          { "varsIgnorePattern": "^_", "argsIgnorePattern": "^_",
-                                            "caughtErrorsIgnorePattern": "^_" }
-                                         ],
-    "@typescript-eslint/no-empty-object-type": ["error", {"allowInterfaces": "with-single-extends"}],
-    "@typescript-eslint/no-unused-expressions": ["error", { "allowTernary": true }],
-    "prefer-const": ["error", {"destructuring": "all"}],
-    "jsdoc/tag-lines": ["warn", "always", {"count": 0, "startLines": 1}],
-    "jsdoc/reject-any-type": "off",
-    "jsdoc/reject-function-type": "off"
+  {
+    files: ['**/*.test.ts'],
+    rules: {
+      "jsdoc/require-jsdoc": "off"
+    }
   }
-});
-
+);