kefir/src/two-sources/take-until-by.js

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

import {createStream, createProperty} from '../patterns/two-sources'

const mixin = {
  _handleSecondaryValue() {
    this._emitEnd()
  },
}

const S = createStream('takeUntilBy', mixin)
const P = createProperty('takeUntilBy', mixin)

export default function takeUntilBy(primary, secondary) {
  return new (primary._ofSameType(S, P))(primary, secondary)
}