openpanel/packages/devtools-shared/src/send.ts

import { DevtoolsEvent, DevtoolsEventPayloads } from "./event-types";

export async function send<T extends DevtoolsEvent>(
    ws: WebSocket,
    event: T,
    payload: DevtoolsEventPayloads[T],
) {
    // check if the socket is open
    // if not, wait for it to open
    if (ws.readyState !== ws.OPEN) {
        await new Promise<void>((resolve) => {
            const listener = () => {
                ws.send(JSON.stringify({ event, payload }));
                resolve();
                ws.removeEventListener("open", listener);
            };

            ws.addEventListener("open", listener);
        });
        return;
    } else {
        ws.send(JSON.stringify({ event, payload }));
        return;
    }
}