Cannot read property 'LEENDPOINT' of undefined - reactjs

Question

I am integrating LogEntries in my react application.
But right after importing LogEntry js file. I am getting console error that:
const Logger = require ('./logger.jsx')('your token', {trace: true});
Error:
le.min.js:5 Uncaught TypeError: Cannot read property 'LEENDPOINT' of undefined
at new e (le.min.js:5)
at new p (le.min.js:10)
at f (le.min.js:11)
at Object.init (le.min.js:12)
at module.exports (logger.jsx:9)
at Object.defineProperty.value (App.js:10)
at __webpack_require__ (bootstrap 9c287bdecc8b4481a87b:19)
at Object.defineProperty.value (AppWrapper.js:2)
at __webpack_require__ (bootstrap 9c287bdecc8b4481a87b:19)
at Object.<anonymous> (index.js:8)
Update:
After debbuging I came to know that window object is undefined in logger file.
This is piece of code which is causing havoc:
if (window.LEENDPOINT) {
_endpoint = window.LEENDPOINT;
}
Still looking for solution.
Update 2.0:
Here is my Logger.jsx
const LogEntries = require ('./le.min.js');
module.exports = (token, opts={}) => {
if(!token){
throw new Error ('A valid token is required for all LogEntries library implementations.');
}
opts.token = token;
LogEntries.init(opts);
return LogEntries;
}

Answer 1

Following solution worked for me:
Downloaded le.min.js from https://docs.logentries.com/docs/javascript
Imported <script src="/assets/scripts/le.min.js"></script> in my index.html. Make sure you import it before bundle.js
Created one file. Logger.js
const token = 'token';
const region = 'us';
const trace = true;
/*eslint-disable */
LE.init({ token, region, trace});
export default LE;
/*eslint-enable */
Whenever you want to make log import import Logger from './Logger';
Log using: Logger.error('Log');