Fix update core dependencies

.github/workflows/update-core-deps.yml

@@ -19,7 +19,8 @@ jobs:
 
       # Use ncu to detect major version changes
       - run: npm i -g npm-check-updates
-      - run: ncu -u
+      # typescript-eslint doesn't yet support eslint 9
+      - run: ncu -u -x eslint -x @eslint/js
       - run: npm i
       - run: git restore package.json
       # package-lock wants to remember the original version numbers of package.json

eslint.config.js

@@ -0,0 +1,26 @@
+// @ts-check
+
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+import prettierRecommended from "eslint-plugin-prettier/recommended";
+import globals from "globals";
+
+export default tseslint.config(
+  eslint.configs.recommended,
+  ...tseslint.configs.recommended,
+  prettierRecommended,
+  {
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        ...globals.browser,
+      }
+    },
+    rules: {
+      "no-prototype-builtins": 0,
+      "@typescript-eslint/no-explicit-any": 0,
+      "@typescript-eslint/no-non-null-assertion": 0,
+      "@typescript-eslint/no-var-requires": 0,
+    },
+  }
+);