import mitt from 'mitt'

interface Adapter {
  $on(event: string, fn: (...args: any[]) => void): void
  $off(event: string): void
  $emit(event: string, ...args: any[]): void
}

export class busEvent implements Adapter {
  private mitt
  constructor() {
    this.mitt = mitt()
  }
  $on(event: string, fn: (...args: any[]) => void): void {
    this.mitt.on && this.mitt.on(event, fn)
  }
  $off(event: string): void {
    this.mitt.off && this.mitt.off(event)
  }

  $emit(event: string, value: any): void {
    this.mitt.emit && this.mitt.emit(event, value)
  }
  on(event: string, fn: (...args: any[]) => void): void {
    this.mitt.on && this.mitt.on(event, fn)
  }

  off(event: string): void {
    this.mitt.off && this.mitt.off(event)
  }

  emit(event: string, value: any): void {
    this.mitt.emit && this.mitt.emit(event, value)
  }
}