Getting "Cannot find module 'zone.js/dist/zone-node'" when deploying on production server

[tonihuang]

Hi there,

Thank you for the great starter template!
I have been using it to create application and when i'm about to deploy to production server i get "Cannot find module 'zone.js/dist/zone-node'. The steps that i did was:

1. yarn universal
2. copy dist/ and dll/ folder to server
3. Runnode dist/server.js
   The fuill stacktrace is as below
   Error: Cannot find module 'zone.js/dist/zone-node'
   at Function.Module._resolveFilename (module.js:476:15)
   at Function.Module._load (module.js:424:25)
   at Module.require (module.js:504:17)
   at require (internal/module.js:20:19)
   at Object.zone.js/dist/zone-node (/var/.../myapp/dist/server.js:9138:18)
   at webpack_require (/var/.../myapp/dist/server.js:20:30)
   at Object. (/var/.../myapp/dist/server.js:8647:130)
   at Object../src/server.ts (/var/.../myapp/dist/server.js:8711:30)
   at webpack_require (/var/.../myapp/dist/server.js:20:30)
   at /var/.../myapp/dist/server.js:63:18

I can run it on the generated server.js in local but not on server. Any help will be appreciated. Thanks!

[SamuelThomas78]

Hi,
I have same problem did you find a solution ?

[tonihuang]

Hi Samuel,

I ended up performing yarn install on server to have the package installed on server.

[nagarajukmenlo]

Hi,
When we run node dist/server.js I am getting following error:

Error: Invalid provider for undefined. useClass cannot be undefined.
Usually it happens when:
1. There's a circular dependency (might be caused by using index.ts (barrel) files).
2. Class was used before it was declared. Use forwardRef in this case.
at syntaxError (C:\Users\nagaraajuk\Desktop\New folder\dist\node_modules@angular\compiler\bundles\compiler.umd.js:287:21)

Node Version: 9.11.0
Webpack version: 4.0.0
NPM version: 5.6.0

Please help us to resolve the above issue.

Thanks.

[nagarajukmenlo]

Hi All,

I got a fix for the above-mentioned issue.

I have added below lines in webpak.config.ts

"module": {
"rules": [
{
"enforce": "pre",
"test": /.js$/,
"loader": "source-map-loader",
"exclude": [
// instead of //node_modules//
path.join(process.cwd(), 'node_modules')
]
},

[abelokon0711]

@nagarajukmenlo unfortunately your solution did not help. we get still the same error

[ohabash]

I have the same problem. The problem started when i was trying to fix another problem . My universal app kept failing during build but doing the following in webpack.server.config.js allowed the app to build. But cause the same problem you guys described above.

const nodeExternals = require('webpack-node-externals');

module.exports = {
...
   externals: [nodeExternals()],
...
}

Did you guys find a solution? are you still working on it?