Description:

In the current implementation of the isSocketClosingOrClosed method, the state of the WebSocket connection is checked using the following logic:

isSocketClosingOrClosed() {
    return ![2, 3].includes(this.websocket.readyState);
}

This condition currently checks if the WebSocket connection is in the CLOSED (3) or CLOSING (2) states but does not handle the CONNECTING (0) state. As a result, if send is called while the WebSocket is still in the CONNECTING state, it may throw an error.

Suggested Improvement:

To enhance robustness, updating the condition to explicitly account for the CONNECTING state as follows:

isSocketReadyForSending() {
    return this.websocket.readyState === WebSocket.OPEN; // 1
}

This modification would prevent sending messages when the WebSocket is not fully open, reducing the likelihood of encountering runtime errors and improving the overall stability of the application.