// 创建时间总线
const eventBus = {
    events: {},
    on(event, callback) {
        if (!this.events[event]) {
            this.events[event] = [];
        }
        this.events[event].push(callback);
    },
    emit(event, data) {
        if (this.events[event]) {
            this.events[event].forEach(callback => callback(data));
        }
    },
    off(event, callback) {
        if (this.events[event]) {
            this.events[event] = this.events[event].filter(cb => cb !== callback);
        }
    }
};

export default eventBus;