@websolutespa/payload-plugin-bowl/dist/components/DataTree/EventEmitter.js

Bowl PayloadCms plugin of the BOM Repository

export class EventEmitter {
    handlerCount = 0;
    handlers = [];
    options;
    constructor(options){
        this.options = options;
    }
    get numberOfHandlers() {
        return this.handlers.filter((h)=>!!h).length;
    }
    async emit(payload) {
        const promises = [];
        this.options?.logger?.('emit', payload);
        for (const handler of this.handlers){
            if (handler) {
                const res = handler(payload);
                if (typeof res?.then === 'function') {
                    promises.push(res);
                }
            }
        }
        await Promise.all(promises);
    }
    on(handler) {
        this.options?.logger?.('on');
        this.handlers.push(handler);
        return this.handlerCount++;
    }
    off(handlerId) {
        this.delete(handlerId);
    }
    delete(handlerId) {
        this.options?.logger?.('off');
        this.handlers[handlerId] = null;
    }
}

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