Create new tweet with Google Script - google-apps-script

Question

(I have read already the solution given in Tweet using Google Script but it doesn't work for me. Please don't delete this question.)
Page https://ctrlq.org/code/19995-google-script-to-twitter shows a way to create a tweet in Google Script.
I simply pasted the code offered there and successfully followed this instructions:
Go to apps.twitter.com and create a new app
Generate Access Token and Secret
Include Twitter library key «MKvHYYdYA4G5JJHj7hxIcoh8V4oX7X1M_» in Google Script
Activate «Enable Sign in with Twitter» in «App details» in Twitter
Add the «Callbacks URL» in Twitter using my Google Script Project Key: https://script.google.com/macros/d/ML3pMd5z.../usercallback
Now, when I run the code almost nothing happens, but this error message: ReferenceError: "twit" is not defined. (line 22, file "Code").
function sendTweet(status){
status = status || "I found this snippet on #labnol's ctrlq.org";
var twitterKeys= {
TWITTER_CONSUMER_KEY: "1fZn8cBR...",
TWITTER_CONSUMER_SECRET: "588gJxh...",
TWITTER_ACCESS_TOKEN: "112c5e0...",
TWITTER_ACCESS_SECRET: "DcvV614.",
};
var props = PropertiesService.getScriptProperties();
props.setProperties(twitterKeys);
var service = new Twitter.OAuth(props);
if ( service.hasAccess() ) {
var response = twit.sendTweet(status); // ← THIS IS LINE 21
if (response) {
Logger.log("Tweet ID " + response.id_str);
} else {
// Tweet could not be sent
// Go to View -> Logs to see the error message
}
}
}
Please tell me how to fix this specific code.
Found the answer in https://medium.com/javascript-in-plain-english/i-made-a-twitter-bot-from-nothing-but-a-google-sheet-ef0ba6e1b194 and simply added the missing variable after var service = new Twitter.OAuth(props);:
var twit = new Twitter.OAuth(props);
The final code is like so:
function sendTweet(){
var status = "Text to be tweeted goes here.";
var twitterKeys= {
TWITTER_CONSUMER_KEY: "1fZBR...",
TWITTER_CONSUMER_SECRET: "Ig...tzpa4E...",
TWITTER_ACCESS_TOKEN: "1125...90...",
TWITTER_ACCESS_SECRET: "...22GrDcv...",
};
var props = PropertiesService.getScriptProperties();
props.setProperties(twitterKeys);
var service = new Twitter.OAuth(props);
var twit = new Twitter.OAuth(props); // ← THIS WAS THE MISSING VARIABLE
if ( service.hasAccess() ) {
var response = twit.sendTweet(status);
if (response) {
Logger.log("Tweet ID " + response.id_str);
} else { }
}
}