vuejs event bus typescript

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Samuel
10 Jul 2019
1//events - a super-basic Javascript (publish subscribe) pattern
2
3class Event{
4    constructor(){
5        this.events = {};
6    }
7
8    on(eventName, fn) {
9        this.events[eventName] = this.events[eventName] || [];
10        this.events[eventName].push(fn);
11    }
12
13    off(eventName, fn) {
14        if (this.events[eventName]) {
15            for (var i = 0; i < this.events[eventName].length; i++) {
16                if (this.events[eventName][i] === fn) {
17                    this.events[eventName].splice(i, 1);
18                    break;
19                }
20            };
21        }
22    }
23
24    trigger(eventName, data) {
25        if (this.events[eventName]) {
26            this.events[eventName].forEach(function(fn) {
27                fn(data);
28            });
29        }
30    }
31}
32
33export default new Event();
34
source
Dixie
27 May 2016
1import Vue from 'vue';
2import $bus from '.../event.js';
3
4const app = Vue.createApp({})
5app.config.globalProperties.$bus = $bus;
6
source
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