@roots/bud-client/lib/hot/events.js

Client scripts for @roots/bud

export const injectEvents = (eventSource) => {
    /**
     * EventSource wrapper
     *
     * @remarks
     * wraps EventSource in a function to allow for
     * mocking in tests
     */
    return class Events extends eventSource {
        /**
         * Singleton constructor
         *
         */
        static make(options) {
            if (typeof window.bud.hmr[options.name] === `undefined`)
                Object.assign(window.bud.hmr, {
                    [options.name]: new Events(options),
                });
            return window.bud.hmr[options.name];
        }
        /**
         * Class constructor
         *
         * @remarks
         * Singleton interface, so this is private.
         *
         */
        constructor(options) {
            super(options.path);
            this.options = options;
            /**
             * Registered listeners
             */
            this.listeners = new Set();
            /**
             * EventSource `onmessage` handler
             */
            this.onmessage = async function (payload) {
                if (!payload?.data || payload.data == `\uD83D\uDC93`) {
                    return;
                }
                try {
                    const data = JSON.parse(payload.data);
                    if (!data)
                        return;
                    await Promise.all([...this.listeners].map(async (listener) => {
                        return await listener(data);
                    }));
                }
                catch (ex) { }
            };
            /**
             * EventSource `onopen` handler
             */
            this.onopen = function () { };
            this.onopen = this.onopen.bind(this);
            this.onmessage = this.onmessage.bind(this);
            this.addListener = this.addListener.bind(this);
        }
        /**
         * EventSource `addMessageListener` handler
         */
        addListener(listener) {
            this.listeners.add(listener);
            return this;
        }
    };
};