javascript redux-observableで作ったintervalのobservableを热模块更换で止まるようにするref：https：//qiita.com/terrierscript

Posted 2021-05-03

import { combineEpics } from "redux-observable"
import { interval, Subject } from "rxjs"
import { map, takeUntil } from "rxjs/operators"

const disposer = new Subject()

export const timerEpic = () => {
  return interval(1000).pipe(
    takeUntil(disposer), // disposerが動くまでtimerを動かす
    map((time) => ({
      type: "TIMER",
      value: time
    }))
  )
}

if (module.hot) {
  module.hot.dispose((data) => {
    disposer.next()
  })
}