fix: got to no zod errors

examples/chat-rn-expo/babel-plugin-transform-zod.js

@@ -0,0 +1,81 @@
+// Custom Babel plugin to transform Zod's dynamic class generation
+// This makes it more compatible with Hermes
+
+module.exports = function (babel) {
+  const { types: t } = babel;
+
+  return {
+    name: "transform-zod-multi-fixes",
+    visitor: {
+      FunctionDeclaration(path) {
+        // Part 1: Target Zod's $constructor function
+        if (path.node.id?.name === "$constructor") {
+          path.traverse({
+            CallExpression(callPath) {
+              const { node } = callPath;
+              const callee = node.callee;
+              if (
+                t.isMemberExpression(callee) &&
+                t.isIdentifier(callee.object, { name: "Object" }) &&
+                t.isIdentifier(callee.property, { name: "defineProperty" }) &&
+                node.arguments.length >= 3 &&
+                t.isIdentifier(node.arguments[0]) &&
+                node.arguments[0].name === "_" &&
+                t.isStringLiteral(node.arguments[1], { value: "name" })
+              ) {
+                callPath.remove();
+              }
+            },
+            ClassDeclaration(classPath) {
+              // Ensure we're targeting the class '_' inside $constructor
+              if (classPath.node.id?.name === "_") {
+                classPath.traverse({
+                  ClassMethod(methodPath) {
+                    const { node: methodNode } = methodPath; // Renamed to avoid conflict with outer 'node'
+                    if (
+                      methodNode.static &&
+                      methodNode.computed &&
+                      t.isMemberExpression(methodNode.key) &&
+                      t.isIdentifier(methodNode.key.object, {
+                        name: "Symbol",
+                      }) &&
+                      t.isIdentifier(methodNode.key.property, {
+                        name: "hasInstance",
+                      })
+                    ) {
+                      methodPath.remove();
+                    }
+                  },
+                });
+              }
+            },
+          });
+        }
+
+        // Part 2: Target Zod's setFunctionName utility (Temporarily Disabled)
+        /* if (path.node.id?.name === 'setFunctionName') {
+          const fnParam = path.node.params[0]; // First parameter, typically 'fn'
+          if (fnParam && t.isIdentifier(fnParam)) {
+            const fnParamName = fnParam.name;
+            path.traverse({
+              CallExpression(callPath) {
+                const { node } = callPath;
+                const callee = node.callee;
+                if (
+                  t.isMemberExpression(callee) &&
+                  t.isIdentifier(callee.object, { name: 'Object' }) &&
+                  t.isIdentifier(callee.property, { name: 'defineProperty' }) &&
+                  node.arguments.length >= 3 &&
+                  t.isIdentifier(node.arguments[0], { name: fnParamName }) && // Target is the 'fn' param
+                  t.isStringLiteral(node.arguments[1], { value: 'name' })
+                ) {
+                  callPath.remove();
+                }
+              }
+            });
+          }
+        } */
+      },
+    },
+  };
+};

examples/chat-rn-expo/babel.config.js

@@ -1,9 +1,20 @@
 module.exports = function (api) {
   api.cache(true);
+
   return {
     presets: [
-      ["babel-preset-expo", { jsxImportSource: "nativewind" }],
-      "nativewind/babel",
+      [
+        "babel-preset-expo",
+        {
+          "@babel/plugin-transform-classes": {
+            loose: false,
+          },
+        },
+      ],
+    ],
+    plugins: [
+      // Custom Zod transformer
+      "./babel-plugin-transform-zod.js",
     ],
   };
 };

examples/chat-rn-expo/index.js

@@ -1,3 +1,19 @@
+// // --- Zod Test Block ---
+// import { z } from "zod/v4";
+
+// try {
+//   console.log("Attempting Zod operation in index.js...");
+//   const schema = z.string();
+//   const result = schema.parse("test");
+//   console.log("Zod operation in index.js successful:", result);
+// } catch (e) {
+//   console.error("Zod operation in index.js FAILED:");
+//   console.error(e.stack || e);
+//   // Optionally, re-throw to ensure it's visible if it doesn't crash already
+//   // throw e;
+// }
+// // --- End Zod Test Block ---
+
 import "./polyfills";
 import { registerRootComponent } from "expo";
 import App from "./src/App";

examples/chat-rn-expo/metro.config.js

@@ -19,11 +19,34 @@ config.resolver.nodeModulesPaths = [
   path.resolve(workspaceRoot, "node_modules"),
 ];
 config.resolver.sourceExts = ["mjs", "js", "json", "ts", "tsx"];
+// even though this is true by default, it seems to help zod
+// TODO: revisit if we find a smoking gun, and remove if we can
+config.resolver.unstable_enablePackageExports = true;
+
 config.resolver.requireCycleIgnorePatterns = [
   /(^|\/|\\)node_modules($|\/|\\)/,
   /(^|\/|\\)packages($|\/|\\)/,
 ];
 
+// --- START: Added/Modified section to transpile Zod ---
+// Ensure Zod is transformed by Babel along with other necessary React Native packages.
+// The pattern below is a common one, with 'zod' added to the list of packages
+// that SHOULD be transformed (i.e., not ignored by the transformer).
+config.transformer = {
+  ...config.transformer, // Preserve existing transformer settings if any from getDefaultConfig
+  getTransformOptions: async () => ({
+    transform: {
+      experimentalImportSupport: false,
+      inlineRequires: true, // Recommended for React Native for performance
+    },
+  }),
+  // This pattern tells Metro to transform Zod and other common RN/Expo packages.
+  transformIgnorePatterns: [
+    "node_modules/(?!(react-native|@react-native|@react-native-community|expo|@expo|zod)/)",
+  ],
+};
+// --- END: Added/Modified section to transpile Zod ---
+
 // Use turborepo to restore the cache when possible
 config.cacheStores = [
   new FileStore({
@@ -31,5 +54,4 @@ config.cacheStores = [
   }),
 ];
 
-// module.exports = config;
 module.exports = withNativeWind(config, { input: "./global.css" });

examples/chat-rn-expo/package.json

@@ -36,15 +36,16 @@
     "react-dom": "19.0.0",
     "react-native": "0.79.2",
     "react-native-get-random-values": "^1.11.0",
-    "react-native-safe-area-context": "5.4.0",
-    "react-native-screens": "4.10.0",
     "react-native-nitro-modules": "0.25.2",
     "react-native-quick-crypto": "1.0.0-beta.15",
+    "react-native-safe-area-context": "5.4.0",
+    "react-native-screens": "4.10.0",
     "react-native-url-polyfill": "^2.0.0",
     "readable-stream": "4.7.0"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
+    "@babel/plugin-transform-runtime": "^7.27.1",
     "@types/react": "~19.0.14",
     "tailwindcss": "^3.4.17",
     "typescript": "5.8.3"

package.json

@@ -50,7 +50,8 @@
     "overrides": {
       "react": "18.3.1",
       "react-dom": "18.3.1",
-      "esbuild": "0.24.0"
+      "esbuild": "0.24.0",
+      "zod": "3.25.0-beta.20250518T002810"
     },
     "patchedDependencies": {
       "expo-router": "patches/expo-router.patch"