1 | var queue = []
|
2 | var running = false
|
3 | var max = 1000 / 60
|
4 |
|
5 | module.exports = function (fn) {
|
6 | if (typeof fn !== 'function') {
|
7 | throw new Error('Must be a function')
|
8 | }
|
9 | queue.push(fn)
|
10 | if (!running) {
|
11 | running = true
|
12 | window.requestIdleCallback(flush)
|
13 | }
|
14 | }
|
15 |
|
16 | function flush () {
|
17 | var startedAt = Date.now()
|
18 |
|
19 | while (queue.length && Date.now() - startedAt < max) {
|
20 | queue.shift()()
|
21 | }
|
22 |
|
23 | if (queue.length) {
|
24 | window.requestIdleCallback(flush)
|
25 | } else {
|
26 | running = false
|
27 | }
|
28 | }
|