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emit and receive events!
当前为
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/426233/942855/Simple%20EventEmitter.js
const EventEmitter = class {
constructor() {
this.a = {};
}
on(t, s) {
!this.a[t] && (this.a[t] = []), this.a[t].push(s);
}
once(t, s) {
!this.a[t] && (this.a[t] = []), this.a[t].push(s);
}
emit(t, s) {
let a = this.a[t];
a && a.forEach(t => t(s));
}
};