update code mods

Author: mdjastrzebski

codemods/v14-update-deps/README.md

@@ -6,8 +6,12 @@ This codemod automatically updates your `package.json` to prepare for React Nati
 
 - Removes `@types/react-test-renderer` and `react-test-renderer` (no longer needed)
 - Moves `@testing-library/react-native` to `devDependencies` if it's in `dependencies`
-- Updates `@testing-library/react-native` to `^14.0.0-beta.0`
-- Adds `test-renderer@^1.0.0` to `devDependencies`
+- Updates `@testing-library/react-native` to `^14.0.0-0`
+- Adds `test-renderer` to `devDependencies`, using the matching React 19 compatibility line when it can infer one:
+  - React 19.0: `test-renderer@^1.0.0`
+  - React 19.1: `test-renderer@^1.1.0`
+  - React 19.2: `test-renderer@^1.2.0`
+  - Missing or ambiguous React version: `test-renderer@^1.2.0`
 
 ## Usage
 
@@ -37,8 +41,8 @@ npx codemod@latest run rntl-v14-update-deps --target ./path/to/your/project
 ```json
 {
   "devDependencies": {
-    "@testing-library/react-native": "^14.0.0-beta.0",
-    "test-renderer": "^1.0.0"
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.2.0"
   }
 }
 ```
@@ -50,7 +54,7 @@ npx codemod@latest run rntl-v14-update-deps --target ./path/to/your/project
   npm install
   # or yarn install / pnpm install
   ```
-- The codemod sets the version to `^14.0.0-beta.0`. You can manually update this if needed.
+- The codemod sets the version to `^14.0.0-0`. You can manually update this if needed.
 - For monorepos, the codemod processes each `package.json` file individually.
 
 ## Next steps

codemods/v14-update-deps/scripts/codemod.ts

@@ -3,8 +3,13 @@
 import type { Transform } from 'codemod:ast-grep';
 import type JSONLang from 'codemod:ast-grep/langs/json';
 
-const RNTL_VERSION = '^14.0.0-beta.0';
-const TEST_RENDERER_VERSION = '^1.0.0';
+const RNTL_VERSION = '^14.0.0-0';
+const TEST_RENDERER_FALLBACK_VERSION = '^1.2.0';
+const TEST_RENDERER_VERSION_BY_REACT_MINOR: Record<string, string> = {
+  '19.0': '^1.0.0',
+  '19.1': '^1.1.0',
+  '19.2': '^1.2.0',
+};
 
 interface PackageJson {
   dependencies?: Record<string, string>;
@@ -141,10 +146,44 @@ function ensureRntlInDevDependencies(packageJson: PackageJson): boolean {
 }
 
 function updateTestRendererVersionInDevDependencies(packageJson: PackageJson): boolean {
+  const expectedVersion = getTestRendererVersion(packageJson);
   const currentVersion = packageJson.devDependencies?.['test-renderer'];
-  if (currentVersion !== TEST_RENDERER_VERSION) {
-    packageJson.devDependencies!['test-renderer'] = TEST_RENDERER_VERSION;
+  if (currentVersion !== expectedVersion) {
+    packageJson.devDependencies!['test-renderer'] = expectedVersion;
     return true;
   }
   return false;
 }
+
+function getTestRendererVersion(packageJson: PackageJson): string {
+  const reactVersion = getPackageVersion(packageJson, 'react');
+  const reactMinor = reactVersion ? getKnownReact19Minor(reactVersion) : null;
+
+  return reactMinor
+    ? TEST_RENDERER_VERSION_BY_REACT_MINOR[reactMinor]
+    : TEST_RENDERER_FALLBACK_VERSION;
+}
+
+function getPackageVersion(packageJson: PackageJson, pkgName: string): string | undefined {
+  for (const depType of [
+    'dependencies',
+    'devDependencies',
+    'peerDependencies',
+    'optionalDependencies',
+  ] as const) {
+    const version = packageJson[depType]?.[pkgName];
+    if (version) {
+      return version;
+    }
+  }
+
+  return undefined;
+}
+
+function getKnownReact19Minor(version: string): string | null {
+  const trimmedVersion = version.trim();
+  const exactVersionMatch = trimmedVersion.match(/^=?~?(19\.(?:0|1|2))(?:\.\d+)?(?:-[\w.-]+)?$/);
+  const xRangeMatch = trimmedVersion.match(/^~?(19\.(?:0|1|2))\.(?:x|\*)$/i);
+
+  return exactVersionMatch?.[1] ?? xRangeMatch?.[1] ?? null;
+}

codemods/v14-update-deps/tests/fixtures/already-alpha/expected.json

@@ -2,7 +2,7 @@
   "name": "test-project",
   "version": "1.0.0",
   "devDependencies": {
-    "@testing-library/react-native": "^14.0.0-beta.0",
-    "test-renderer": "^1.0.0"
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.2.0"
   }
 }

codemods/v14-update-deps/tests/fixtures/basic-update/expected.json

@@ -2,7 +2,7 @@
   "name": "test-project",
   "version": "1.0.0",
   "devDependencies": {
-    "@testing-library/react-native": "^14.0.0-beta.0",
-    "test-renderer": "^1.0.0"
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.2.0"
   }
 }

codemods/v14-update-deps/tests/fixtures/move-from-deps/expected.json

@@ -2,7 +2,7 @@
   "name": "test-project",
   "version": "1.0.0",
   "devDependencies": {
-    "@testing-library/react-native": "^14.0.0-beta.0",
-    "test-renderer": "^1.0.0"
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.2.0"
   }
 }

codemods/v14-update-deps/tests/fixtures/react-19-0/expected.json

@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "react": "19.0.0"
+  },
+  "devDependencies": {
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.0.0"
+  }
+}

codemods/v14-update-deps/tests/fixtures/react-19-0/input.json

@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "@testing-library/react-native": "^13.0.0",
+    "react": "19.0.0"
+  },
+  "devDependencies": {
+    "react-test-renderer": "19.0.0"
+  }
+}

codemods/v14-update-deps/tests/fixtures/react-19-1/expected.json

@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "react": "~19.1.0"
+  },
+  "devDependencies": {
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.1.0"
+  }
+}

codemods/v14-update-deps/tests/fixtures/react-19-1/input.json

@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "@testing-library/react-native": "^13.0.0",
+    "react": "~19.1.0"
+  },
+  "devDependencies": {
+    "react-test-renderer": "19.1.0"
+  }
+}

codemods/v14-update-deps/tests/fixtures/react-19-2/expected.json

@@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "react": "19.2.x"
+  },
+  "devDependencies": {
+    "@testing-library/react-native": "^14.0.0-0",
+    "test-renderer": "^1.2.0"
+  }
+}