kefir/src/two-sources/awaiting.js

Reactive Programming library for JavaScript inspired by Bacon.js and RxJS with focus on high performance and low memory usage

import merge from '../many-sources/merge'
import map from '../one-source/map'
import skipDuplicates from '../one-source/skip-duplicates'
import toProperty from '../one-source/to-property'

const f = () => false
const t = () => true

export default function awaiting(a, b) {
  let result = merge([map(a, t), map(b, f)])
  result = skipDuplicates(result)
  result = toProperty(result, f)
  return result.setName(a, 'awaiting')
}