Disabling TypeScript in Production Next.js Builds : ignoreBuildErrors

While Next.js's TypeScript integration provides a safety net for type errors, it carries performance overheads during production builds. This can lead to slower build times and higher resource consumption or you just want to try out the production build but the typescript type errors stopping the nextjs builds. Selectively disabling type checking can help with this.

Configuration

Two options for disabling type checking in production Next.js exists:

• tsconfig.json configuration Set the noEmit flag to true, disabling type checking for production builds.
• next.config.js configuration Set the typescript property to false, also disabling type checking for production builds.

Next Config (this is the preferred way):

#next.config.js
module.exports = {
  typescript: {
    ignoreBuildErrors: true, // Disables type checking in production builds
  },
};

Just add the key:value pair ignoreBuildErrors:true , if your project's next config already has typescript object.

Considerations

Disabling type checking may lead to:

• Loss of type safety: Runtime errors might remain undetected.
• Reduced development experience: Type checks offer valuable early feedback, highlighting potential code improvements.
• Increased testing requirements: More rigorous tests are crucial for ensuring code quality.

Conclusion

By understanding the considerations and configuration methods, you can leverage type checking's benefits while maximizing production build performance in your Next.js application. Optimize for performance, build quality, and developer experience, finding a perfect equilibrium for your project.