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pageExtensions

Source URL: https://nextjs.org/docs/pages/api-reference/config/next-config-js/pageExtensions

pageExtensions

Section titled “pageExtensions”

You can extend the default Page extensions (.tsx, .ts, .jsx, .js) used by Next.js. Inside next.config.js, add the pageExtensions config:

module.exports = {
  pageExtensions: ['mdx', 'md', 'jsx', 'js', 'tsx', 'ts'],
}

Changing these values affects all Next.js pages, including the following:

For example, if you reconfigure .ts page extensions to .page.ts, you would need to rename pages like proxy.page.ts, instrumentation.page.ts, _app.page.ts.

Including non-page files in the pages directory

Section titled “Including non-page files in the pages directory”

You can colocate test files or other files used by components in the pages directory. Inside next.config.js, add the pageExtensions config:

module.exports = {
  pageExtensions: ['page.tsx', 'page.ts', 'page.jsx', 'page.js'],
}

Then, rename your pages to have a file extension that includes .page (e.g. rename MyPage.tsx to MyPage.page.tsx). Ensure you rename all Next.js pages, including the files mentioned above.

Section titled “Then, rename your pages to have a file extension that includes .page (e.g. rename MyPage.tsx to MyPage.page.tsx). Ensure you rename all Next.js pages, including the files mentioned above.”