This JavaScript code checks if a client object exists and, if so, closes all connections to it by calling the endAll() method. If the client object does not exist, the code does nothing.

Cell 16

if(typeof client !== 'undefined') {
    client.endAll();
}

/**
 * Ends all client connections.
 * 
 * @param {Object} client The client object that needs to be ended.
 * @throws {Error} If the client object is undefined or null.
 */
function endClientConnections(client) {
    if (!client) {
        throw new Error('Client object is undefined or null.');
    }

    if (client.endAll) {
        client.endAll();
    } else {
        console.warn('Client object does not have an endAll method.');
    }
}

// Usage example
try {
    endClientConnections(client);
} catch (error) {
    console.error(error);
}

Code Snippet

Purpose

Closes all connections to a client if it exists.

Syntax

if (typeof client!== 'undefined') {
  client.endAll();
}

Parameters

• client: The client object to end all connections for.

Function

• The function checks if the client variable is defined.
• If client is defined, it calls the endAll() method on it to close all connections.
• If client is not defined, the endAll() method is not called.