I cannot use Websocket package on NestJS

Question

I'm trying to work with websockets on Nestjs, i install the dependencies

yarn add @nestjs/websockets @nestjs/platform-socket.io

I generated a example resource for the websockets

nest g res messagesWs --no-spec

Then this message shows up in my terminal

TypeError: this.metadataScanner.getAllMethodNames is not a function

This is a capture from the problem

What can i do? PD: sorry for my bad english

I search for that function getAllMethodNames but i didn't get anything

Could you share the messageWs file and the module you added it to, please. — Natan Deitch
– Natan Deitch, Commented Feb 7, 2023 at 15:41

Kamil Myśliwiec · Accepted Answer · 2023-02-21 08:40:26Z

17

@nestjs/core and @nestjs/websockets versions should always be in sync. For example, if the latest version of your locally installed @nestjs/websockets package is 9.3.6, then you have to make sure that @nestjs/core is also on 9.3.6.

Once you fix this up, the error will go away.

answered Feb 21, 2023 at 8:40

Kamil Myśliwiec

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1 Comment

worldsayshi Over a year ago

I assume there's no way to express such a constraint in the package file? So you have to resort to specifying exact versions in the package.json file?

Roman · Accepted Answer · 2023-02-08 12:23:44Z

11

I had the same problem. I solved it by downgrading a few versions.

From

"@nestjs/platform-socket.io": "9.3.6", "@nestjs/websockets": "9.3.6"

to

"@nestjs/platform-socket.io": "9.1.6", "@nestjs/websockets": "9.1.6"

answered Feb 8, 2023 at 12:23

Roman

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erfan seidipoor · Accepted Answer · 2023-02-08 09:57:32Z

1

It wokrs for me follow these steps:

remove node_modules folder
from package.json remove ^ before the version number
npm install

answered Feb 8, 2023 at 9:57

erfan seidipoor

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Tyler2P · Accepted Answer · 2023-02-09 15:55:43Z

1

I back to v.

"@nestjs/platform-socket.io": "^7.6.15",
"@nestjs/websockets": "^7.6.15",

is working

edited Feb 9, 2023 at 15:55

Tyler2P

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answered Feb 7, 2023 at 16:15

song mart

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Carlos Gigante Over a year ago

Thanks, i tried with 9.1.6 version and its working

Tyler2P · Accepted Answer · 2023-03-24 16:46:56Z

0

Work for me:

Get @nestjs/core version in pnpm-lock.yaml

Then install @nestjs/platform-socket.io and @nestjs/websockets as same version of @nestjs/core

Or upgrade all packages about nestjs to latest, pnpm up

edited Mar 24, 2023 at 16:46

Tyler2P

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answered Mar 20, 2023 at 11:53

Fishcan

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