The writeStream.getWindowSize() method an inbuilt application programming interface of class WriteStream within tty module which is used to get the size of the TTY corresponding to this WriteStream object.
Syntax:
writeStream.getWindowSize()
Parameters: This method does not accept any parameter.
Return Value: This method returns array of type [numColumns, numRows] containing numColumns and numRows.
Example 1: Filename: index.js
// Node.js program to demonstrate the // writeStream..getWindowSize() API // Importing dgram module var dgram = require( 'dgram' );
// Creating and initializing client // and server socket var client = dgram.createSocket( "udp4" );
var server = dgram.createSocket( "udp4" );
// Handling the message event server.on( "message" , function (msg) {
// Creating and initializing a
// WriteStream object
let WriteStream = process.stdout;
// Getting window size of this write stream
// object by using .getWindowSize() API
const col = WriteStream.getWindowSize();
// Displaying the result
process.stdout.write(msg + col[0]);
// Exiting process
process.exit();
}) // Binding server with port
.bind(1234, () => { }); // Client sending message to server client.send( "number columns of writestream :- " , 0,
50, 1234, "localhost" );
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Output:
number columns of writestream :- 182
Example 2: Filename: index.js
// Node.js program to demonstrate the // writeStream..getWindowSize() API // Creating and initializing a WriteStream object let WriteStream = process.stdout; // Getting window size of this write stream // object by using .getWindowSize() method const col = WriteStream.getWindowSize(); // Displaying the result console.log( "number rows of writestream :- " + col[1]);
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Run the index.js file using the following command:
node index.js
Output:
number rows of writestream :- 14
Reference: https://nodejs.org/dist/latest-v12.x/docs/api/tty.html#tty_writestream_getwindowsize