callbag-pausable-interval

A callbag listenable source that sends incremental numbers every x milliseconds, but can be paused (and resumed) when it is pulled by a sink.

This is a hybrid source, it is both listenable and pullable. Don't use forEach directly as the sink for this source, because forEach pulls every time it receives data. You can use this source as the argument for sample, though.

npm install callbag-pausable-interval

example

const pausableInterval = require('callbag-pausable-interval')

const source = pausableInterval(600)

source(0, (type, data) => {
  if (type === 0) {
    const talkback = data
    // Every 2 seconds, send a message "null" back to the source
    setInterval(() => talkback(1, null), 2000)
  }
  if (type === 1) console.log(data)
})
// 0
// 1
// 2
// ...pauses and waits...
// 3
// 4
// 5
// ...pauses and waits...
// 6
// 7
// 8
// ...