Nx monorepo MODULE_NOT_FOUND – require(’@scope/lib’) fails in dist

Im looking for help with basic lib dependency in an app. not a custom solution

Nx monorepo: Internal library imports not found after production build

I'm working in an Nx monorepo (v20.4.4) with a Node.js app called pulse. The app builds and runs fine in development (nx serve pulse), but in production, it fails with Cannot find module errors for internal libraries.

Folder structure (simplified):

apps/
  pulse/
    src/
      main.ts
libs/
  shared/
    mongo-connect/
      src/
        index.ts

Problem:

When I build the app:

nx build pulse

And try to run it:

node dist/apps/pulse/main.js

I get this error:

Error: Cannot find module '/.../node_modules/@readyfastcode/mongo-connect/src/index.js'.
Please verify that the package.json has a valid "main" entry

The output JS includes lines like: (code from dist that is failing)

module.exports = require("@readyfastcode/mongo-connect");

But @readyfastcode/mongo-connect is an internal lib — it's not published and doesn’t exist in node_modules. If I change the path to a relative one (like ../../libs/shared/mongo-connect/src/index.js), it works, but that’s not maintainable.

i saw others using transform paths but why? this is supposed to work without

i see suggestions to update apps/pulse/project.json with dependsOn or implicitDependencies. from what i tried that doesnt change anythin.

My environment:

• Nx: 20.4.4
• @nx/node: 20.4.4
• @nx/js: 20.8.1
• Node: 20.9

Question:

Im not looking for a custom solution. just looking for basic NX functionality. The relation ship between apps and libs is the whole point of nx. Im looking for a lesson or documentation or a debug route

Is there a clean way to either bundle the app or resolve internal lib paths like @readyfastcode/mongo-connect at runtime, without publishing them or rewriting import paths?

Any help would be appreciated!