@zkochan/pnpm/lib/node_modules/most/src/disposable/SettableDisposable.js

Fast, disk space efficient package manager

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

export default function SettableDisposable () {
  this.disposable = void 0
  this.disposed = false
  this._resolve = void 0

  var self = this
  this.result = new Promise(function (resolve) {
    self._resolve = resolve
  })
}

SettableDisposable.prototype.setDisposable = function (disposable) {
  if (this.disposable !== void 0) {
    throw new Error('setDisposable called more than once')
  }

  this.disposable = disposable

  if (this.disposed) {
    this._resolve(disposable.dispose())
  }
}

SettableDisposable.prototype.dispose = function () {
  if (this.disposed) {
    return this.result
  }

  this.disposed = true

  if (this.disposable !== void 0) {
    this.result = this.disposable.dispose()
  }

  return this.result
}