legalesign.js

import {AuthenticationDetails, CognitoUser, CognitoUserPool} from "amazon-cognito-identity-js";

const getToken = (username, password) => {
    const pool = process.env.COGNITO_USER_POOL_ID;
    const appClientId = process.env.COGNITO_CLIENT_ID;

    if (!pool || !appClientId) {
        throw new Error("COGNITO_USER_POOL_ID and COGNITO_CLIENT_ID environment variables are required");
    }

    if (!username || !password) {
        throw new Error("LEGALESIGN_EMAIL and LEGALESIGN_PASSWORD environment variables are required");
    }

    const authenticationDetails = new AuthenticationDetails({
        Username: username,
        Password: password
    });    

    let cognitoUser = new CognitoUser({
        Username: username,
        Pool: new CognitoUserPool({
            UserPoolId: pool,
            ClientId: appClientId
        })
    });

    cognitoUser.setAuthenticationFlowType('USER_PASSWORD_AUTH');

    return new Promise((resolve, reject) =>
        cognitoUser.authenticateUser(authenticationDetails, {
            onSuccess: result => resolve(result.getAccessToken().getJwtToken()),
            onFailure: err => reject(err)
        })
    );
}

export default getToken;