kefir/src/two-sources/sampled-by.js

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

import combine from '../many-sources/combine'

const id2 = (_, x) => x

export default function sampledBy(passive, active, combinator) {
  let _combinator = combinator ? (a, b) => combinator(b, a) : id2
  return combine([active], [passive], _combinator).setName(passive, 'sampledBy')
}