devex: make it impossible to commit eslint errors

.husky/pre-commit

@@ -0,0 +1 @@
+node tools/validate-eslint.js

package-lock.json

@@ -39,6 +39,7 @@
         "globals": "^15.0.0",
         "html-entities": "^2.3.3",
         "html-webpack-plugin": "^5.6.0",
+        "husky": "^9.1.7",
         "license-check-and-add": "^4.0.5",
         "mocha": "^10.6.0",
         "nodemon": "^3.1.0",
@@ -12159,6 +12160,22 @@
         "ms": "^2.0.0"
       }
     },
+    "node_modules/husky": {
+      "version": "9.1.7",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-9.1.7.tgz",
+      "integrity": "sha512-5gs5ytaNjBrh5Ow3zrvdUUY+0VxIuWVL4i9irt6friV+BqdCfmV11CQTWMiBYWHbXhco+J1kHfTOUkePhCDvMA==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "husky": "bin.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/typicode"
+      }
+    },
     "node_modules/ico-endec": {
       "version": "0.1.6",
       "resolved": "https://registry.npmjs.org/ico-endec/-/ico-endec-0.1.6.tgz",
@@ -20377,7 +20394,7 @@
     },
     "src/puter-js": {
       "name": "@heyputer/puter.js",
-      "version": "2.0.12",
+      "version": "2.0.13",
       "license": "Apache-2.0",
       "dependencies": {
         "@heyputer/kv.js": "^0.1.92",

package.json

@@ -21,6 +21,7 @@
     "globals": "^15.0.0",
     "html-entities": "^2.3.3",
     "html-webpack-plugin": "^5.6.0",
+    "husky": "^9.1.7",
     "license-check-and-add": "^4.0.5",
     "mocha": "^10.6.0",
     "nodemon": "^3.1.0",
@@ -33,7 +34,8 @@
     "start=gui": "nodemon --exec \"node dev-server.js\" ",
     "start": "node ./tools/run-selfhosted.js",
     "build": "cd src/gui; node ./build.js",
-    "check-translations": "node tools/check-translations.js"
+    "check-translations": "node tools/check-translations.js",
+    "prepare": "husky"
   },
   "workspaces": [
     "src/*",
@@ -70,4 +72,4 @@
   "engines": {
     "node": ">=20.0.0"
   }
-}
+}

tools/validate-eslint.js

@@ -0,0 +1,36 @@
+// This script does not validate that eslint rules are followed; it only
+// ensures that the eslint configuration is valid. When there are errors
+// present in the eslint configuration, vscode pretends everything is
+// fine and that there are no linter errors in any files.
+
+import { ESLint } from 'eslint';
+
+async function validateConfig() {
+    let exitWithError = false;
+
+    try {
+        const eslint = new ESLint();
+        await eslint.lintText('', { filePath: 'src/gui/**/*.js' });
+    } catch (error) {
+        console.error('❌ ESLint configuration error (general):', error.message);
+        exitWithError = true;
+    }
+
+    try {
+        const eslint = new ESLint();
+        await eslint.lintText('', { filePath: 'src/backend/**/*.js' });
+    } catch (error) {
+        console.error('❌ ESLint configuration error (backend):', error.message);
+        exitWithError = true;
+    }
+    
+    if ( exitWithError ) {
+        console.log('\x1B[36;1mYou should edit eslint.config.js to resolve this issue.\x1B[0m');
+        console.log('\x1B[31;1mIf this is an emergency, use `git commit --no-verify`.\x1B[0m');
+        process.exit(1);
+    }
+
+    console.log('✅ ESLint configuration is valid');
+}
+
+validateConfig();