Undo move of files to safe-chain

eslint.config.js

@@ -0,0 +1,25 @@
+import js from "@eslint/js";
+import { defineConfig } from "@eslint/config-helpers";
+import globals from "globals";
+import importPlugin from "eslint-plugin-import";
+
+export default defineConfig([
+  {
+    files: ["**/*.{js,mjs,cjs,ts}"],
+    plugins: { js },
+    extends: ["js/recommended"],
+  },
+  {
+    files: ["**/*.{js,mjs,cjs,ts}"],
+    languageOptions: { globals: globals.node },
+  },
+  importPlugin.flatConfigs.recommended,
+  {
+    files: ["**/*.{js,mjs,cjs}"],
+    languageOptions: {
+      ecmaVersion: "latest",
+      sourceType: "module",
+    },
+    rules: {},
+  },
+]);