Question

152

Nestjs using axios

rated 0 times [ 155] [ 3] / answers: 1 / hits: 60477 / 6 Years ago, wed, october 17, 2018, 12:00:00

This simple demo has an error
https://docs.nestjs.com/techniques/http-module

import { Get, Controller, HttpService } from '@nestjs/common';

import { AxiosResponse } from 'axios'

import { Observable } from 'rxjs'

@Controller()

export class AppController {

  constructor(private readonly http: HttpService) {}

  @Get()

  root(): Observable<AxiosResponse<any>>  {

    return this.http.get('https://api.github.com/users/januwA');

  }

}

What should I do?

[Nest] 7356   - 2018-10-18 00:08:59   [ExceptionsHandler] Converting circular structure to JSON +9852ms

TypeError: Converting circular structure to JSON

    at JSON.stringify (<anonymous>)

nest i

common version : 5.1.0

core version   : 5.1.0

Answers

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alorac

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answered 6 Years ago pranav · Accepted Answer

You cannot just return the whole AxiosResponse object because it cannot be serialized to JSON. You most likely want to get the response data like this:

@Get()

root() {

  return this.http.get('https://api.github.com/users/januwA').pipe(

    map(response => response.data)

  );

}

or alternatively using Promises:

@Get()

async root() {

  const response = await this.http.get('https://api.github.com/users/januwA').toPromise();

  return response.data;

}