kefir/src/emitter.js

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

export default function emitter(obs) {
  function value(x) {
    obs._emitValue(x)
    return obs._active
  }

  function error(x) {
    obs._emitError(x)
    return obs._active
  }

  function end() {
    obs._emitEnd()
    return obs._active
  }

  function event(e) {
    obs._emit(e.type, e.value)
    return obs._active
  }

  return {
    value,
    error,
    end,
    event,

    // legacy
    emit: value,
    emitEvent: event,
  }
}