Perform Login with AWS Cognito Identity JS SDK

Cognito_Login.js

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// Copyright (c) 2021 Facebank, Inc.                                         //
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const AmazonCognitoIdentity = require("amazon-cognito-identity-js"); // npm install amazon-cognito-identity-js
const fetch = require("node-fetch");                                 // npm install node-fetch@2 for require(nonESM)

// REQUIRED FIELDS
const username = '***';
const password = '***';
const cognitoPoolId = '***';
const cognitoClientId = '***';

const authenticationData = {
  Username: username,
  Password: password,
};

const poolData = {
  UserPoolId: cognitoPoolId,
  ClientId: cognitoClientId
};

const authenticationDetails = new AmazonCognitoIdentity.AuthenticationDetails(
  authenticationData
);
const userPool = new AmazonCognitoIdentity.CognitoUserPool(poolData);
const userData = {
  Username: authenticationData.Username,
  Pool: userPool,
};
const cognitoUser = new AmazonCognitoIdentity.CognitoUser(userData);

cognitoUser.authenticateUser(authenticationDetails, {
  onSuccess: async (result) => {
    try {
      console.log(`Success: ${JSON.stringify(result, null, 2)}`);
    } catch (e) {
      console.error(e);
    }
  },
  onFailure: (err) => {
    console.error(`*** FAILURE ${authenticationData.Username}`);
    console.error(JSON.stringify(err, null, 2));
  },
});