SignalR on Webpack and TypeScript: cannot find module './NodeHttpClient'

Question

I'm trying to set a SignalR client in an Angular app. There is Webpack which does the job. And TypeScript, of course.

Package.json is

{
  "private": true,
  "version": "0.0.0",
  "scripts": {
    "test": "karma start ClientApp/test/karma.conf.js"
  },
  "devDependencies" " { ... }
  "dependencies": {
    "@aspnet/signalr": "^1.1.0"
  }
}

The TypeScript code is:

import { HubConnectionBuilder } from '@aspnet/signalr';

@Component({
    selector: 'stream-details',
    templateUrl: './stream-details.component.html'
})
export class StreamDetailsComponent implements OnInit {
    @Input() summary: any;

constructor(private deviceService: StreamService) {
}

ngOnInit() {

    let connection = new HubConnectionBuilder()
        .withUrl('/streamingHub')
        .build()

    connection
        .start()
        .then(() => connection.stream('SubscribeToStream', 'stream123'));
}
}

When the app is running, the error is:

NodeInvocationException: Prerendering failed because of error: Error: Cannot find module './NodeHttpClient'

Why is not this NodeHttpClient.js file included? What do I miss?

score 4 · Answer 1 · answered Dec 11 '18 at 22:40

4

This prolem persists right now. There is also an issue on github. The issue is closed however according to my observations the problem still the case.

answered Dec 11 '18 at 22:40

Derviş Kayımbaşıoğlu

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score 1 · Answer 2 · answered Dec 12 '18 at 07:23

1

Downgrading your @aspnet/signalr version to 1.0.0 solving the issue.

answered Dec 12 '18 at 07:23

rcanpahali

2,565
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Yeap, this is working. This is a solution, it got me unblocked. But on the long run is not users would want. – tomab Dec 12 '18 at 16:03

score 0 · Accepted Answer · answered Dec 21 '18 at 09:52

0

Package @aspnet/signalr 1.1.0 doesn't show this issue anymore. I cannot reproduce it on a new angular app.

answered Dec 21 '18 at 09:52

tomab

2,061
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1

Doesn't work for me with 1.1.0, same error, last working version is npm install @aspnet/signalr@1.0.4 – pingo Jan 27 '19 at 12:01
@pingo then your only chance is to fill an issue on the official repo and provide a sample app where the error is reproduced. – tomab Feb 03 '19 at 08:07

SignalR on Webpack and TypeScript: cannot find module './NodeHttpClient'

3 Answers3