how send string with his length in first 4 bytes via socket in node.js

sendstringasbyteswithlength.js

// Include Nodejs' net module.
const Net = require('net');
// The port number and hostname of the server.
const port = 55555;
const host = 'localhost';



// Create a new TCP client.
const client = new Net.Socket();
// Send a connection request to the server.
client.connect({ port: port, host: host }, function() {
    // If there is no error, the server has accepted the request and created a new 
    // socket dedicated to us.
    console.log('TCP connection established with the server.');

    var buffer = Buffer.from('Hello from node.js socket\n', "binary");

    //create a buffer with +4 bytes
    var consolidatedBuffer = Buffer.alloc(4 + buffer.length);

    //write at the beginning of the buffer, the total size using Little Endian
    consolidatedBuffer.writeInt32LE(buffer.length, 0);

    //Copy the message buffer to the consolidated buffer at position 4     (after the 4 bytes about the size)
    buffer.copy(consolidatedBuffer, 4);
  
  
    // The client can now send data to the server by writing to its socket.
    client.write(consolidatedBuffer);
});

// The client can also receive data from the server by reading from its socket.
client.on('data', function(chunk) {
    console.log(`Data received from the server: ${chunk.toString()}.`);
    
    // Request an end to the connection after the data has been received.
    client.end();
});