[compiler] improve zod v3 backwards compat (#34877)

## Summary

When upgrading to `babel-plugin-react-compiler@1.0.0` in a project that
uses `zod@3` we are running into TypeScript errors like:

```
node_modules/babel-plugin-react-compiler/dist/index.d.ts:435:10 - error TS2694: Namespace '"/REDACTED/node_modules/zod/v3/external"' has no exported member 'core'.

435     }, z.core.$strip>>>;
             ~~~~
```

This problem seems to be related to
d6eb735938, which introduced zod v3/v4
compatibility. Since `zod` is bundled into the compiler source this does
not cause runtime issues and only manifests as TypeScript errors. My
proposed solution is this PR is to use zod's [subpath versioning
strategy](https://zod.dev/v4/versioning?id=versioning-in-zod-4) which
allows you to support v3 and v4 APIs on both major versions.

Changes in this PR include:

- Updated `zod` import paths to `zod/v4`
- Bumped min `zod` version to `^3.25.0` for zod which guarantees the
`zod/v4` subpath is available.
- Updated `zod-validation-error` import paths to
`zod-validation-error/v4`
- Bumped min `zod-validation-error ` version to `^3.5.0` 
- Updated `externals` tsup configuration where appropriate. 

Once the compiler drops zod v3 support we could optionally remove the
`/v4` subpath from the imports.

## How did you test this change?

Not totally sure the best way to test. I ran `NODE_ENV=production yarn
workspace babel-plugin-react-compiler run build --dts` and diffed the
`dist/` folder between my change and `v1.0.0` and it looks correct. We
have a `patch-package` patch to workaround this for now and it works as
expected.

```diff
diff --git a/node_modules/babel-plugin-react-compiler/dist/index.d.ts b/node_modules/babel-plugin-react-compiler/dist/index.d.ts
index 81c3f3d..daafc2c 100644
--- a/node_modules/babel-plugin-react-compiler/dist/index.d.ts
+++ b/node_modules/babel-plugin-react-compiler/dist/index.d.ts
@@ -1,7 +1,7 @@
 import * as BabelCore from '@babel/core';
 import { NodePath as NodePath$1 } from '@babel/core';
 import * as t from '@babel/types';
-import { z } from 'zod';
+import { z } from 'zod/v4';
 import { NodePath, Scope } from '@babel/traverse';
 
 interface Result<T, E> {
```

Co-authored-by: Henry Q. Dineen <henryqdineen@gmail.com>

compiler/packages/babel-plugin-react-compiler/package.json

@@ -52,8 +52,8 @@
     "react-dom": "0.0.0-experimental-4beb1fd8-20241118",
     "ts-jest": "^29.1.1",
     "ts-node": "^10.9.2",
-    "zod": "^3.22.4 || ^4.0.0",
-    "zod-validation-error": "^3.0.3 || ^4.0.0"
+    "zod": "^3.25.0 || ^4.0.0",
+    "zod-validation-error": "^3.5.0 || ^4.0.0"
   },
   "resolutions": {
     "./**/@babel/parser": "7.7.4",

compiler/packages/babel-plugin-react-compiler/src/Entrypoint/Options.ts

@@ -6,7 +6,7 @@
  */
 
 import * as t from '@babel/types';
-import {z} from 'zod';
+import {z} from 'zod/v4';
 import {
   CompilerDiagnostic,
   CompilerError,
@@ -20,7 +20,7 @@ import {
   tryParseExternalFunction,
 } from '../HIR/Environment';
 import {hasOwnProperty} from '../Utils/utils';
-import {fromZodError} from 'zod-validation-error';
+import {fromZodError} from 'zod-validation-error/v4';
 import {CompilerPipelineValue} from './Pipeline';
 
 const PanicThresholdOptionsSchema = z.enum([

compiler/packages/babel-plugin-react-compiler/src/HIR/Environment.ts

@@ -6,8 +6,8 @@
  */
 
 import * as t from '@babel/types';
-import {ZodError, z} from 'zod';
-import {fromZodError} from 'zod-validation-error';
+import {ZodError, z} from 'zod/v4';
+import {fromZodError} from 'zod-validation-error/v4';
 import {CompilerError} from '../CompilerError';
 import {Logger, ProgramContext} from '../Entrypoint';
 import {Err, Ok, Result} from '../Utils/Result';

compiler/packages/babel-plugin-react-compiler/src/HIR/HIR.ts

@@ -16,7 +16,7 @@ import {assertExhaustive} from '../Utils/utils';
 import {Environment, ReactFunctionType} from './Environment';
 import type {HookKind} from './ObjectShape';
 import {Type, makeType} from './Types';
-import {z} from 'zod';
+import {z} from 'zod/v4';
 import type {AliasingEffect} from '../Inference/AliasingEffects';
 import {isReservedWord} from '../Utils/Keyword';
 import {Err, Ok, Result} from '../Utils/Result';

compiler/packages/babel-plugin-react-compiler/src/HIR/TypeSchema.ts

@@ -6,7 +6,7 @@
  */
 
 import {isValidIdentifier} from '@babel/types';
-import {z} from 'zod';
+import {z} from 'zod/v4';
 import {Effect, ValueKind} from '..';
 import {
   EffectSchema,

compiler/packages/babel-plugin-react-compiler/src/Utils/TestUtils.ts

@@ -5,7 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import {fromZodError} from 'zod-validation-error';
+import {fromZodError} from 'zod-validation-error/v4';
 import {CompilerError} from '../CompilerError';
 import {
   CompilationMode,

compiler/packages/eslint-plugin-react-compiler/package.json

@@ -15,8 +15,8 @@
     "@babel/core": "^7.24.4",
     "@babel/parser": "^7.24.4",
     "hermes-parser": "^0.25.1",
-    "zod": "^3.22.4 || ^4.0.0",
-    "zod-validation-error": "^3.0.3 || ^4.0.0"
+    "zod": "^3.25.0 || ^4.0.0",
+    "zod-validation-error": "^3.5.0 || ^4.0.0"
   },
   "devDependencies": {
     "@babel/preset-env": "^7.22.4",

compiler/packages/eslint-plugin-react-compiler/tsup.config.ts

@@ -10,7 +10,14 @@ import {defineConfig} from 'tsup';
 export default defineConfig({
   entry: ['./src/index.ts'],
   outDir: './dist',
-  external: ['@babel/core', 'hermes-parser', 'zod', 'zod-validation-error'],
+  external: [
+    '@babel/core',
+    'hermes-parser',
+    'zod',
+    'zod/v4',
+    'zod-validation-error',
+    'zod-validation-error/v4',
+  ],
   splitting: false,
   sourcemap: false,
   dts: false,

compiler/packages/react-compiler-healthcheck/package.json

@@ -17,8 +17,8 @@
     "fast-glob": "^3.3.2",
     "ora": "5.4.1",
     "yargs": "^17.7.2",
-    "zod": "^3.22.4 || ^4.0.0",
-    "zod-validation-error": "^3.0.3 || ^4.0.0"
+    "zod": "^3.25.0 || ^4.0.0",
+    "zod-validation-error": "^3.5.0 || ^4.0.0"
   },
   "devDependencies": {},
   "engines": {

compiler/packages/react-compiler-healthcheck/tsup.config.ts

@@ -18,7 +18,9 @@ export default defineConfig({
     'ora',
     'yargs',
     'zod',
+    'zod/v4',
     'zod-validation-error',
+    'zod-validation-error/v4',
   ],
   splitting: false,
   sourcemap: false,

compiler/packages/react-mcp-server/package.json

@@ -24,7 +24,7 @@
     "html-to-text": "^9.0.5",
     "prettier": "^3.3.3",
     "puppeteer": "^24.7.2",
-    "zod": "^3.22.4 || ^4.0.0"
+    "zod": "^3.25.0 || ^4.0.0"
   },
   "devDependencies": {
     "@types/html-to-text": "^9.0.4",

compiler/packages/react-mcp-server/src/index.ts

@@ -7,7 +7,7 @@
 
 import {McpServer} from '@modelcontextprotocol/sdk/server/mcp.js';
 import {StdioServerTransport} from '@modelcontextprotocol/sdk/server/stdio.js';
-import {z} from 'zod';
+import {z} from 'zod/v4';
 import {compile, type PrintedCompilerPipelineValue} from './compiler';
 import {
   CompilerPipelineValue,

compiler/packages/snap/package.json

@@ -37,7 +37,9 @@
     "react": "0.0.0-experimental-4beb1fd8-20241118",
     "react-dom": "0.0.0-experimental-4beb1fd8-20241118",
     "readline": "^1.3.0",
-    "yargs": "^17.7.1"
+    "yargs": "^17.7.1",
+    "zod": "^3.25.0 || ^4.0.0",
+    "zod-validation-error": "^3.5.0 || ^4.0.0"
   },
   "devDependencies": {
     "@babel/core": "^7.19.1",

compiler/packages/snap/src/sprout/evaluator.ts

@@ -9,8 +9,8 @@ import {render} from '@testing-library/react';
 import {JSDOM} from 'jsdom';
 import React, {MutableRefObject} from 'react';
 import util from 'util';
-import {z} from 'zod';
-import {fromZodError} from 'zod-validation-error';
+import {z} from 'zod/v4';
+import {fromZodError} from 'zod-validation-error/v4';
 import {initFbt, toJSON} from './shared-runtime';
 
 /**

compiler/yarn.lock

@@ -11505,17 +11505,17 @@ zod-to-json-schema@^3.24.1:
   resolved "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.24.5.tgz"
   integrity sha512-/AuWwMP+YqiPbsJx5D6TfgRTc4kTLjsh5SOcd4bLsfUg2RcEXrFMJl1DGgdHy2aCfsIA/cr/1JM0xcB2GZji8g==
 
-"zod-validation-error@^3.0.3 || ^4.0.0":
+"zod-validation-error@^3.5.0 || ^4.0.0":
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/zod-validation-error/-/zod-validation-error-4.0.2.tgz#bc605eba49ce0fcd598c127fee1c236be3f22918"
   integrity sha512-Q6/nZLe6jxuU80qb/4uJ4t5v2VEZ44lzQjPDhYJNztRQ4wyWc6VF3D3Kb/fAuPetZQnhS3hnajCf9CsWesghLQ==
 
-"zod@^3.22.4 || ^4.0.0":
-  version "4.1.11"
-  resolved "https://registry.yarnpkg.com/zod/-/zod-4.1.11.tgz#4aab62f76cfd45e6c6166519ba31b2ea019f75f5"
-  integrity sha512-WPsqwxITS2tzx1bzhIKsEs19ABD5vmCVa4xBo2tq/SrV4RNZtfws1EnCWQXM6yh8bD08a1idvkB5MZSBiZsjwg==
-
 zod@^3.23.8, zod@^3.24.1:
   version "3.24.3"
   resolved "https://registry.npmjs.org/zod/-/zod-3.24.3.tgz"
   integrity sha512-HhY1oqzWCQWuUqvBFnsyrtZRhyPeR7SUGv+C4+MsisMuVfSPx8HpwWqH8tRahSlt6M3PiFAcoeFhZAqIXTxoSg==
+
+"zod@^3.25.0 || ^4.0.0":
+  version "4.1.12"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-4.1.12.tgz#64f1ea53d00eab91853195653b5af9eee68970f0"
+  integrity sha512-JInaHOamG8pt5+Ey8kGmdcAcg3OL9reK8ltczgHTAwNhMys/6ThXHityHxVV2p3fkw/c+MAvBHFVYHFZDmjMCQ==

packages/eslint-plugin-react-hooks/package.json

@@ -42,8 +42,8 @@
     "@babel/core": "^7.24.4",
     "@babel/parser": "^7.24.4",
     "hermes-parser": "^0.25.1",
-    "zod": "^3.22.4 || ^4.0.0",
-    "zod-validation-error": "^3.0.3 || ^4.0.0"
+    "zod": "^3.25.0 || ^4.0.0",
+    "zod-validation-error": "^3.5.0 || ^4.0.0"
   },
   "devDependencies": {
     "@babel/eslint-parser": "^7.11.4",

scripts/rollup/bundles.js

@@ -1255,7 +1255,9 @@ const bundles = [
       '@babel/core',
       'hermes-parser',
       'zod',
+      'zod/v4',
       'zod-validation-error',
+      'zod-validation-error/v4',
       'crypto',
       'util',
     ],

yarn.lock

@@ -18245,12 +18245,12 @@ zip-stream@^2.1.2:
     compress-commons "^2.1.1"
     readable-stream "^3.4.0"
 
-"zod-validation-error@^3.0.3 || ^4.0.0":
+"zod-validation-error@^3.5.0 || ^4.0.0":
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/zod-validation-error/-/zod-validation-error-4.0.2.tgz#bc605eba49ce0fcd598c127fee1c236be3f22918"
   integrity sha512-Q6/nZLe6jxuU80qb/4uJ4t5v2VEZ44lzQjPDhYJNztRQ4wyWc6VF3D3Kb/fAuPetZQnhS3hnajCf9CsWesghLQ==
 
-"zod@^3.22.4 || ^4.0.0":
-  version "4.1.11"
-  resolved "https://registry.yarnpkg.com/zod/-/zod-4.1.11.tgz#4aab62f76cfd45e6c6166519ba31b2ea019f75f5"
-  integrity sha512-WPsqwxITS2tzx1bzhIKsEs19ABD5vmCVa4xBo2tq/SrV4RNZtfws1EnCWQXM6yh8bD08a1idvkB5MZSBiZsjwg==
+"zod@^3.25.0 || ^4.0.0":
+  version "4.1.12"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-4.1.12.tgz#64f1ea53d00eab91853195653b5af9eee68970f0"
+  integrity sha512-JInaHOamG8pt5+Ey8kGmdcAcg3OL9reK8ltczgHTAwNhMys/6ThXHityHxVV2p3fkw/c+MAvBHFVYHFZDmjMCQ==