pull-debounce's Introduction

pull-debounce

debounce for pull-streams

Example

var pull = require('pull-stream')
var debounce = require('pull-debounce')

function timedSource(data) {
  return pull(
    pull.values(data),
    pull.asyncMap(function(item, cb) {
      setTimeout(function() {
        cb(null, item[1])
      }, item[0]);
    })
  )
}

pull(
  timedSource([
    [0,   0],
    [250, 1],
    [10,  2],
    [250, 3],
    [2000,4],
    [10,  5]
  ]),
  debounce(200),
  pull.log()
)
// => 0,2,3,5

Credits

Many thanks to @amsross, who provided valuable feedback, bug reports and code

License

MIT

pull-debounce's People

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pull-debounce's Issues

test" should pass through single item after timeout" fails

Not the behaviour expected from debounce

as @amsross pointed out in #1

Clash of the debouncers

Rather than pollute pull-stream/pull-stream-docs#27 with this discussion, I'm opening this issue.

I have a feeling that our two implementations of debounce may serve two different purposes.

Your implementation using pull-window will return the last data event in one window regardless of silence on the wire within or after one window. My implementation will wait until there has been silence on the wire for the length of one window, at which time it will return the last data event. As a result, my implementation will not pass your tests, and your implementation will not pass my tests.

My understanding is that the pull-window implementation is not correct according to what I interpret debouncing to mean. Do you agree or am I misinterpreting what is really going on?

(re: https://css-tricks.com/the-difference-between-throttling-and-debouncing/#article-header-id-1)

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