tronbox/build/components/Deployer/src/deferredchain.js

TronBox - Simple development framework for Tron

"use strict";function DeferredChain(){var self=this;this.chain=new Promise(function(accept,reject){self._accept=accept;self._reject=reject});this["await"]=new Promise(function(){self._done=arguments[0];self._error=arguments[1]});this.started=false}DeferredChain.prototype.then=function(fn){var self=this;this.chain=this.chain.then(function(){var args=Array.prototype.slice.call(arguments);return fn.apply(null,args)});this.chain=this.chain["catch"](function(e){self._error(e)});return this};DeferredChain.prototype["catch"]=function(fn){this.chain=this.chain["catch"](function(){var args=Array.prototype.slice.call(arguments);return fn.apply(null,args)});return this};DeferredChain.prototype.start=function(){this.started=true;this.chain=this.chain.then(this._done);this._accept();return this["await"]};module.exports=DeferredChain;