bantic · April 14, 2025 10:15 · Apr 14, 2025 · Apr 14, 2025
diff --git a/.eslintrc.js b/.eslintrc.js
@@ -0,0 +1,16 @@
+// eslint-disable-next-line no-undef
+module.exports = {
+  // If the line below is commented out, the eslint default parser is used,
+  // and the parserOptions.ecmaVersion becomes meaningful; it must be incremented
+  // to a value greater than 2024 to parse the entire test.js file.
+  // When the babel eslint-parser is used, the ecmaVersion option is ignored.
+  parser: "@babel/eslint-parser",
+  parserOptions: {
+    ecmaVersion: 2017,
+    requireConfigFile: false,
+    babelOptions: {
+      plugins: [["@babel/plugin-proposal-decorators", { version: "2023-11" }]],
+    },
+  },
+  extends: ["eslint:recommended"],
+};
diff --git a/package.json b/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "test-eslint",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@babel/eslint-parser": "^7.27.0",
+    "@babel/plugin-proposal-decorators": "^7.25.9",
+    "eslint": "^8.0.0"
+  }
+}
diff --git a/test.js b/test.js
@@ -0,0 +1,22 @@
+let tests = {};
+
+tests.objspread = { ...{} }; // es2018
+tests.bign_syntaxt = 10n; // es2020
+let undef;
+tests.nullish = undef ?? "foo"; // es2020
+tests.logical_assign ??= true; // es2021
+tests.regexp_indices = /foo/dg; // es2022
+tests.regexp_unicode = /foo/v; // es2024
+
+// class annotation below requires:
+//   parser: @babel/eslint-parser
+//   with babelOptions:
+//     plugins: [["@babel/plugin-proposal-decorators", { version: "2023-11" }]],
+
+// @annotation
+// // eslint-disable-next-line no-unused-vars
+// class MyClass {}
+
+// function annotation(target) {
+//   target.annotated = true;
+// }