typescript

Configure TypeScript behavior with the typescript option in next.config.js:

module.exports = {
  typescript: {
    ignoreBuildErrors: false,
    tsconfigPath: 'tsconfig.json',
  },
}

Options

ignoreBuildErrors

Next.js fails your production build (next build) when TypeScript errors are present in your project.

If you'd like Next.js to dangerously produce production code even when your application has errors, you can disable the built-in type checking step.

If disabled, be sure you are running type checks as part of your build or deploy process, otherwise this can be very dangerous.

module.exports = {
  typescript: {
    // !! WARN !!
    // Dangerously allow production builds to successfully complete even if
    // your project has type errors.
    // !! WARN !!
    ignoreBuildErrors: true,
  },
}

tsconfigPath

Use a different TypeScript configuration file for builds or tooling:

module.exports = {
  typescript: {
    tsconfigPath: 'tsconfig.build.json',
  },
}

See the TypeScript configuration page for more details.