Add JS Linting

javascript/.eslintrc.js

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+module.exports = {
+  extends: [
+    "eslint:recommended",
+    "plugin:jest/recommended",
+    "plugin:prettier/recommended",
+  ],
+  parser: "@babel/eslint-parser",
+  env: {
+    commonjs: true,
+    es6: true,
+  },
+  ignorePatterns: ["dist/**"],
+  overrides: [
+    {
+      files: ["jest.*", "tests/**"],
+      env: {
+        node: true,
+      },
+      globals: {
+        getMeasureCounter: "writable",
+        getMeasureCounterMax: "writable",
+        getMeasureCounterMin: "writable",
+        Yoga: "writable",
+      },
+    },
+  ],
+};