@zkochan/pnpm/lib/node_modules/most/src/scheduler/PropagateTask.js

Fast, disk space efficient package manager

/** @license MIT License (c) copyright 2010-2016 original author or authors */
/** @author Brian Cavalier */
/** @author John Hann */

import fatal from '../fatalError'

export default function PropagateTask (run, value, sink) {
  this._run = run
  this.value = value
  this.sink = sink
  this.active = true
}

PropagateTask.event = function (value, sink) {
  return new PropagateTask(emit, value, sink)
}

PropagateTask.end = function (value, sink) {
  return new PropagateTask(end, value, sink)
}

PropagateTask.error = function (value, sink) {
  return new PropagateTask(error, value, sink)
}

PropagateTask.prototype.dispose = function () {
  this.active = false
}

PropagateTask.prototype.run = function (t) {
  if (!this.active) {
    return
  }
  this._run(t, this.value, this.sink)
}

PropagateTask.prototype.error = function (t, e) {
  if (!this.active) {
    return fatal(e)
  }
  this.sink.error(t, e)
}

function error (t, e, sink) {
  sink.error(t, e)
}

function emit (t, x, sink) {
  sink.event(t, x)
}

function end (t, x, sink) {
  sink.end(t, x)
}