Clear the client console in SSH2 for NodeJS? - node.js

Question

I am building a command-line game that players will connect to over SSH. I have an SSH2 server script that responds to commands, but I would like to know if it is possible to clear the client console from the server?
I would like to have a cls/clear command that clears the console at a user's request, like the Unix command 'clear'.
Here is my code:
var fs = require('fs');
var crypto = require('crypto');
var inspect = require('util').inspect;
var ssh2 = require('ssh2');
var utils = ssh2.utils;
var allowedUser = Buffer.from('foo');
var allowedPassword = Buffer.from('bar');
var allowedPubKey = utils.parseKey(fs.readFileSync('public.key')); ;
new ssh2.Server({
hostKeys: [{
key: fs.readFileSync('private.key'),
passphrase: '<private key passphrase>'
}
]
}, function (client) {
console.log('Client connected!');
client.on('authentication', function (ctx) {
var user = Buffer.from(ctx.username);
if (user.length !== allowedUser.length
|| !crypto.timingSafeEqual(user, allowedUser)) {
return ctx.reject();
}
switch (ctx.method) {
case 'password':
var password = Buffer.from(ctx.password);
if (password.length !== allowedPassword.length
|| !crypto.timingSafeEqual(password, allowedPassword)) {
return ctx.reject(['password'],false);
}
break;
default:
return ctx.reject(['password'],false);
}
ctx.accept();
}).on('ready', function () {
console.log('Client authenticated!');
client.once('session', function (accept, reject) {
var session = accept();
session.on('shell', (accept, reject) => {
var stream = accept();
stream.write('Welcome to EnLore!\n\r');
stream.on('data', data => {
var args = data.toString().replace("\n","").split(" ");
if (args[0] == '\r') return;
switch(args[0]) {
case 'exit':
stream.exit(0);
stream.end();
stream = undefined;
break;
case 'echo':
stream.write(args[1]);
break;
case 'clear':
// -------------- CLEAR CONSOLE HERE --------------
break;
default:
stream.write('Unknown command');
break;
}
stream.write('\n\r');
});
});
});
}).on('end', function () {
console.log('Client disconnected');
});
}).listen(8080, '0.0.0.0', function () {
console.log('Listening on port ' + this.address().port);
});
EDIT:
I have found that writing \f to the stream will clear the current window, however, it only appends to the console, rather than clearing it