How to fix Your version of TypeScript is not supported in React

ReactINTERMEDIATEMEDIUMUpdated Dec 10, 2025· 151 views

This error occurs when your React project uses a TypeScript version that is incompatible with your React configuration or build tools. Common triggers include outdated TypeScript versions, mismatched @types/react packages, or incompatible React TypeScript configurations in tools like Create React App or Next.js.

Quick fix

Fixes Your version of TypeScript is not supported

# Check locally installed version
npx tsc --version

# Check globally installed version (if any)
tsc --version

# Check package.json version
npm list typescript
# or
yarn list --pattern typescript
  1. Check your current TypeScript version
  2. Update TypeScript to supported version
  3. Update @types/react and @types/react-dom
  4. Configure tsconfig.json correctly
react — error
# Check locally installed version
npx tsc --version
# Check globally installed version (if any)
tsc --version
# Check package.json version
npm list typescript
# or
yarn list --pattern typescript
Your version of TypeScript is not supported

What this error means

The "Your version of TypeScript is not supported" error appears when your React development environment detects an incompatible TypeScript version. This typically happens because: 1. **Build tool constraints**: Tools like Create React App (CRA), Next.js, or Vite have specific TypeScript version requirements. When you install a TypeScript version outside their supported range, they reject it to prevent runtime issues. 2. **Type definition mismatches**: The @types/react and @types/react-dom packages must align with both your React version and TypeScript version. Using older @types packages with newer TypeScript can cause type errors that tools interpret as incompatibility. 3. **Compiler feature requirements**: Newer React features (like JSX transform changes in React 17+, concurrent features in React 18) require specific TypeScript compiler options or minimum versions. When your TypeScript is too old, it cannot parse or type-check these features correctly. 4. **Configuration conflicts**: Your tsconfig.json settings might conflict with the requirements of your React build tool. For example, using "jsx": "react-jsx" with an older TypeScript version that doesn't support the new JSX transform. The error is a protective measure—React tooling prevents you from using a TypeScript version that would produce incorrect type checking or fail to compile newer React syntax.

Typical symptoms

  • Error message: "Your version of TypeScript is not supported" during build or development server startup
  • Create React App refusing to start with "The react-scripts package provided by Create React App requires a specific version of TypeScript"
  • Next.js showing "TypeScript version mismatch" warnings in console
  • Build failures when using newer React features like startTransition or Suspense with older TypeScript
  • Type errors for React hooks or JSX syntax that work fine in JavaScript
  • Development server crashing immediately after TypeScript compilation errors
  • npm/yarn warnings about peer dependency conflicts between @types/react and typescript

Common causes

  1. Using an outdated TypeScript version (e.g., TypeScript <4.1 with React 18)
  2. Mismatch between @types/react version and TypeScript compiler version
  3. Create React App with react-scripts@5+ requiring TypeScript 4.1+
  4. Next.js project using features that require newer TypeScript versions
  5. Global TypeScript installation conflicting with project-local version
  6. Package.json specifying TypeScript version range that resolves to incompatible version
  7. Lock file (package-lock.json, yarn.lock) pinning old TypeScript version
  8. Monorepo workspace where root and child packages have different TypeScript versions

How to fix "Your version of TypeScript is not supported"

1Check your current TypeScript version

First, verify which TypeScript version you're using:

bash
# Check locally installed version
npx tsc --version

# Check globally installed version (if any)
tsc --version

# Check package.json version
npm list typescript
# or
yarn list --pattern typescript

Note the exact version number (e.g., 4.9.5, 5.0.0).

2Update TypeScript to supported version

Install a compatible TypeScript version based on your React setup:

For Create React App with react-scripts@5+:

bash
npm install --save-dev typescript@^4.1
# or for latest compatible version
npm install --save-dev typescript@latest

For Next.js 13+:

bash
npm install --save-dev typescript@^5.0

General React projects (React 18+):

bash
npm install --save-dev typescript@^4.9

After updating, delete your lock file and reinstall:

bash
rm -rf node_modules package-lock.json
npm install
3Update @types/react and @types/react-dom

Ensure your type definitions match your React and TypeScript versions:

bash
# For React 18 with TypeScript 4.9+
npm install --save-dev @types/react@^18 @types/react-dom@^18

# For React 17 with TypeScript 4.1+
npm install --save-dev @types/react@^17 @types/react-dom@^17

# Check for version conflicts
npm ls @types/react @types/react-dom

If you see multiple versions, deduplicate them:

bash
npm dedupe
# or
npx yarn-deduplicate
4Configure tsconfig.json correctly

Update your tsconfig.json with React-compatible settings:

json
{
  "compilerOptions": {
    "target": "es5",
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "module": "esnext",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "jsx": "react-jsx"  // For React 17+, use "react-jsx" not "react"
  },
  "include": ["src"]
}

Key settings:
- "jsx": "react-jsx" for React 17+ with automatic JSX runtime
- "lib": ["dom", "dom.iterable", "esnext"] for React DOM APIs
- "skipLibCheck": true to ignore type definition conflicts temporarily

5Clear TypeScript and build caches

Clear all caches that might be holding onto old TypeScript configurations:

bash
# Clear TypeScript cache
rm -rf node_modules/.cache/tsc
rm -rf .tscache

# For Create React App
rm -rf node_modules/.cache/babel-loader

# For Next.js
rm -rf .next

# For general projects
rm -rf node_modules/.cache

# Restart your development server completely
# Kill any running processes and start fresh

Then restart your development server:

bash
npm start
# or
yarn start
# or
next dev
6Use package manager resolutions for monorepos

In monorepos or projects with nested dependencies, force a single TypeScript version:

For Yarn (package.json):

json
{
  "resolutions": {
    "typescript": "5.0.0",
    "@types/react": "18.0.0",
    "@types/react-dom": "18.0.0"
  }
}

For npm (package.json):

json
{
  "overrides": {
    "typescript": "5.0.0",
    "@types/react": "18.0.0",
    "@types/react-dom": "18.0.0"
  }
}

For pnpm (pnpm-workspace.yaml):

yaml
pnpm:
  overrides:
    typescript: 5.0.0
    '@types/react': 18.0.0
    '@types/react-dom': 18.0.0

After adding resolutions, reinstall dependencies.

7Verify build tool compatibility

Check your build tool's TypeScript requirements:

Create React App:

bash
# Check react-scripts version
npm list react-scripts

# CRA 5+ requires TypeScript 4.1+
# If stuck on older CRA, consider migrating or ejecting

Next.js:

bash
# Check Next.js version
npm list next

# Next.js 13+ works best with TypeScript 5+
# Next.js 12 works with TypeScript 4.6+

Vite:

bash
# Vite typically supports latest TypeScript
# But check @vitejs/plugin-react requirements
npm list @vitejs/plugin-react

If your build tool is too old, consider updating it or checking its documentation for TypeScript compatibility matrix.

Advanced notes

Create React App Specific: CRA has strict TypeScript version requirements. react-scripts@5.0.0 (released 2021) requires TypeScript 4.1+. If you cannot update TypeScript due to other dependencies, you may need to downgrade react-scripts or eject from CRA to customize the TypeScript configuration.

Next.js and App Router: Next.js 13+ with the App Router uses newer TypeScript features for React Server Components. Ensure you have TypeScript 5.0+ and configure "jsx": "preserve" in tsconfig.json for server components.

Global vs Local TypeScript: Avoid global TypeScript installations (npm install -g typescript) when working with React projects. They can conflict with project-local versions. Use npx tsc to always run the local version.

TypeScript Beta/RC Versions: Avoid TypeScript beta or release candidate versions in production React projects. Stick to stable releases that your build tools explicitly support.

Migration Paths: When upgrading from very old TypeScript (e.g., 3.x to 5.x), do it incrementally: update TypeScript, fix type errors, update @types packages, then update React if needed. Use the TypeScript upgrade tool (npx tsc --init --upgrade) to update tsconfig.json settings.

CI/CD Considerations: Ensure your CI environment uses the same TypeScript version as local development. Specify exact versions in package.json (e.g., "typescript": "5.0.0") rather than ranges to prevent version drift.

Frequently asked questions

What does "Your version of TypeScript is not supported" mean?
The "Your version of TypeScript is not supported" error appears when your React development environment detects an incompatible TypeScript version. This typically happens because: 1. js, or Vite have specific TypeScript version requirements.
How do I fix "Your version of TypeScript is not supported"?
This error occurs when your React project uses a TypeScript version that is incompatible with your React configuration or build tools. Common triggers include outdated TypeScript versions, mismatched @types/react packages, or incompatible React TypeScript configurations in tools like Create React App or Next.js.
What causes "Your version of TypeScript is not supported"?
Using an outdated TypeScript version (e.g., TypeScript <4.1 with React 18) Mismatch between @types/react version and TypeScript compiler version Create React App with react-scripts@5+ requiring TypeScript 4.1+
Is the "Your version of TypeScript is not supported" error serious?
It is a medium-severity error — more of a blocker than a risk. The steps above resolve it.

Official resources & further reading