[ERSSUP-84813]-[]-[Migrate eslint config for version 9.x]-[DMW]

Author: nhsd-david-wass

sandbox/src/eslint.config.mjs

@@ -0,0 +1,32 @@
+import { defineConfig } from "eslint/config";
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default defineConfig([{
+    extends: compat.extends("eslint:recommended"),
+
+    languageOptions: {
+        globals: {
+            ...globals.commonjs,
+            ...globals.node,
+            Atomics: "readonly",
+            SharedArrayBuffer: "readonly",
+        },
+
+        ecmaVersion: 2018,
+        sourceType: "commonjs",
+    },
+
+    rules: {},
+}]);