AWS JS SDK TypeError: STS is not a constructor

问题

I'm have a ReactJS application that uses the aws-sdk for cognito login. I used yarn to install all modules, but when I try to access the website at localhost I get a JS error: Uncaught (in promise) TypeError: STS is not a constructor.

The error points to this line in the aws-sdk credentials file:
this.sts = this.sts || new STS(clientConfig);

Where STS is from: var STS = require('../../clients/sts');

Any thoughts on how to resolve this error? I've tried installing other modules or upgrading them, but continue to get this error.

EDIT - VUE.js EXAMPLE:

import {
  Config as AWSConfig,
  CognitoIdentityCredentials,
} from 'aws-sdk/global';
import LexRuntime from 'aws-sdk/clients/lexruntime';
import Polly from 'aws-sdk/clients/polly';

回答1:

I think new STS(...) gives you such error of STS in not a constructor. Please get rid of new operator from it:

this.sts = this.sts || STS(clientConfig);

来源：https://stackoverflow.com/questions/52831576/aws-js-sdk-typeerror-sts-is-not-a-constructor