标签：string bus list ts Array type fn name
type BusClass = {
emit: (name: string) => void
on: (name: string, callback: Function) => void
}
type PramsKey = string | number | symbol
// 调度中心
type List = {
[key: PramsKey]: Array<Function>
}
class Bus implements BusClass {
list: List
constructor() {
this.list = {}
}
emit(name: string, ...args: Array<any>) {
let eventName: Array<Function> = this.list[name]
eventName.forEach(fn => {
fn.apply(this, args)
})
}
on(name: string, callback: Function) {
let fn: Array<Function> = this.list[name] || []
fn.push(callback)
this.list[name] = fn
}
}
export default new Bus()
标签：string,
bus,
list,
ts,
Array,
type,
fn,
name
From： https://www.cnblogs.com/jaycethanks/p/16641374.html