`getServerProps` does not work with native Node.js modules (`fs`, `child_process`...)

Bug report

Describe the bug

In a getServerProps handler, I would like to use fs. However, I get this error:

ModuleNotFoundError: Module not found: Error: Can't resolve 'fs' in '/Users/tim/code/repros/next-child-process/src'
    at /Users/tim/code/repros/next-child-process/node_modules/webpack/lib/Compilation.js:925:10
    at /Users/tim/code/repros/next-child-process/node_modules/webpack/lib/NormalModuleFactory.js:401:22
    at /Users/tim/code/repros/next-child-process/node_modules/webpack/lib/NormalModuleFactory.js:130:21
    at /Users/tim/code/repros/next-child-process/node_modules/webpack/lib/NormalModuleFactory.js:224:22
    at /Users/tim/code/repros/next-child-process/node_modules/neo-async/async.js:2830:7
    at /Users/tim/code/repros/next-child-process/node_modules/neo-async/async.js:6877:13
    at /Users/tim/code/repros/next-child-process/node_modules/webpack/lib/NormalModuleFactory.js:214:25
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/Resolver.js:213:14
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/Resolver.js:285:5
    at eval (eval at create (/Users/tim/code/repros/next-child-process/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:13:1)
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/UnsafeCachePlugin.js:44:7
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/Resolver.js:285:5
    at eval (eval at create (/Users/tim/code/repros/next-child-process/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:13:1)
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/Resolver.js:285:5
    at eval (eval at create (/Users/tim/code/repros/next-child-process/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:25:1)
    at /Users/tim/code/repros/next-child-process/node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js:67:43

I get the same error when importing something from child_process.

To Reproduce

Full reproduction here: https://github.com/timsuchanek/next-child-process

System information

• OS: MacOS, but also Linux in Now
• Version of Next.js: 9.3.5
• Version of Node.js: 12

Additional context

Add any other context about the problem here.

[timneutkens]

You have a typo in your application. It’s not getServerProps but getServerSideProps.

[balazsorban44]

This issue has been automatically locked due to no recent activity. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.