downtime

Do background work during browser idle time.

const downtime = require("downtime")

API

downtime.do(callback)

• Schedule callback to run during next idle period
• Return an id for cancellation purposes
• Callback is invoked with an IdleDeadline object

downtime.do(function(deadline) {
  // Do background work
})

downtime.dont(id)

• Cancel callback represented by id

var id = downtime.do(doBackgroundWork)
downtime.dont(id)

Notes

• Downtime uses requestIdleCallback and cancelIdleCallback where available
• Fallback technique is based on this gist
• For best performance, avoid DOM manipulation during idle time

Compatibility

• Native: caniuse: requestIdleCallback
• Fallback: any JavaScript environment