Jonathan Staab
25 lines
600 B
TypeScript
25 lines
600 B
TypeScript
export type EventBusListener = {
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id: string
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handler: (...args: any[]) => void
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}
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export class EventBus {
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listeners: Record<string, Array<EventBusListener>> = {}
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on(name, handler) {
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const id = Math.random().toString().slice(2)
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this.listeners[name] = this.listeners[name] || ([] as Array<EventBusListener>)
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this.listeners[name].push({id, handler})
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return id
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}
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off(name, id) {
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this.listeners[name] = this.listeners[name].filter(l => l.id !== id)
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}
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handle(k, ...payload) {
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for (const {handler} of this.listeners[k] || []) {
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handler(...payload)
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}
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}
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}
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