Aws Js Sdk Typeerror: Sts Is Not A Constructor

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: Unca

Solution 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);