https://github.com/Andarist/callbag-tap-up

👜 Callbag operator which performs a side effect for every upwards emission (from sink to source), but other than that it acts as noop.
https://github.com/Andarist/callbag-tap-up

callbag callbags

Last synced: 18 days ago
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👜 Callbag operator which performs a side effect for every upwards emission (from sink to source), but other than that it acts as noop.

• Host: GitHub
• URL: https://github.com/Andarist/callbag-tap-up
• Owner: Andarist
• Created: 2018-07-18T09:37:46.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2018-10-11T21:21:23.000Z (about 6 years ago)
• Last Synced: 2024-10-20T06:22:59.732Z (24 days ago)
• Topics: callbag, callbags
• Language: JavaScript
• Homepage:
• Size: 2.93 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-callbags - tap-up

README

        
# callbag-tap-up

Callbag operator which performs a side effect for every upwards emission (from sink to source), but other than that it acts as noop.

## Example

```js

import forEach from 'callbag-for-each'

import fromIter from 'callbag-from-iter'

import pipe from 'callbag-pipe'

import take from 'callbag-take'

import tapUp from 'callbag-tap-up'

pipe(

  fromIter([10, 20, 30, 40, 50]),

  tapUp(

    data => console.log(data), // always undefined in this example (forEach doesn't send anything up)

    err => console.log(err),

    () => console.log('unsubscribed'),

  ),

  take(2),

  forEach(values => {

    console.log(values) // 10, 20

  }),

)

```