Circular JSON TypeError in @nestjs/axios

[sahellebusch]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

Add HttpModule import to module, HttpService to class and receive the following error when running jest test:

 TypeError: Converting circular structure to JSON
        --> starting at object with constructor 'NestContainer'
        |     property 'modules' -> object with constructor 'Map'
        |     property 'InternalCoreModule' -> object with constructor 'Module'
        --- property 'container' closes the circle
        at stringify (<anonymous>)

Minimum reproduction code

https://github.com/sahellebusch/nestjs-cats-example

Steps to reproduce

1. npm i
2. npm run test

Expected behavior

No circular type error.

Package

• I don't know. Or some 3rd-party package
• @nestjs/common
• @nestjs/core
• @nestjs/microservices
• @nestjs/platform-express
• @nestjs/platform-fastify
• @nestjs/platform-socket.io
• @nestjs/platform-ws
• @nestjs/testing
• @nestjs/websockets
• Other (see below)

Other package

@nestjs/axios

NestJS version

9.3.0

Packages versions

See example repo.

Node.js version

v16.15.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[jmcdo29]

Looks like an error when we're trying to throw an error about an improper test configuration (e.g. a missing provider). Interestingly enough, I only see this error when running multiple test files, not when I run each one individually.

[micalevisk]

I found that this isn't related with @nestjs/axios:

[micalevisk]

and looks that's happens in v9.3.10 but not in v9.3.9 (npm i @nestjs/core@9.3.9 @nestjs/common@9.3.9 @nestjs/testing@9.3.9), so it's a regression

Not sure why v9.3.9...v9.3.10

[kamilmysliwiec]

Just to make sure that I'm on the same page - so this issue doesn't occur on the latest version? @micalevisk

[micalevisk]

@kamilmysliwiec it happens on v9.3.10 and v9.3.11 (the latest version as of now). v9.3.9 is fine.

[micalevisk]

might be related with this issue on Jest side: jestjs/jest#10577 because it works as expected when using detectOpenHandles: true

But we must fix that on our side as it works with @nestjs/core v9.3.9 (and because that issue is open since 2020 lol)

[kamilmysliwiec]

Fixed in 9.3.12