1"use strict"; 2module.exports = function(Promise) { 3var longStackTraces = false; 4var contextStack = []; 5 6Promise.prototype._promiseCreated = function() {}; 7Promise.prototype._pushContext = function() {}; 8Promise.prototype._popContext = function() {return null;}; 9Promise._peekContext = Promise.prototype._peekContext = function() {}; 10 11function Context() { 12 this._trace = new Context.CapturedTrace(peekContext()); 13} 14Context.prototype._pushContext = function () { 15 if (this._trace !== undefined) { 16 this._trace._promiseCreated = null; 17 contextStack.push(this._trace); 18 } 19}; 20 21Context.prototype._popContext = function () { 22 if (this._trace !== undefined) { 23 var trace = contextStack.pop(); 24 var ret = trace._promiseCreated; 25 trace._promiseCreated = null; 26 return ret; 27 } 28 return null; 29}; 30 31function createContext() { 32 if (longStackTraces) return new Context(); 33} 34 35function peekContext() { 36 var lastIndex = contextStack.length - 1; 37 if (lastIndex >= 0) { 38 return contextStack[lastIndex]; 39 } 40 return undefined; 41} 42Context.CapturedTrace = null; 43Context.create = createContext; 44Context.deactivateLongStackTraces = function() {}; 45Context.activateLongStackTraces = function() { 46 var Promise_pushContext = Promise.prototype._pushContext; 47 var Promise_popContext = Promise.prototype._popContext; 48 var Promise_PeekContext = Promise._peekContext; 49 var Promise_peekContext = Promise.prototype._peekContext; 50 var Promise_promiseCreated = Promise.prototype._promiseCreated; 51 Context.deactivateLongStackTraces = function() { 52 Promise.prototype._pushContext = Promise_pushContext; 53 Promise.prototype._popContext = Promise_popContext; 54 Promise._peekContext = Promise_PeekContext; 55 Promise.prototype._peekContext = Promise_peekContext; 56 Promise.prototype._promiseCreated = Promise_promiseCreated; 57 longStackTraces = false; 58 }; 59 longStackTraces = true; 60 Promise.prototype._pushContext = Context.prototype._pushContext; 61 Promise.prototype._popContext = Context.prototype._popContext; 62 Promise._peekContext = Promise.prototype._peekContext = peekContext; 63 Promise.prototype._promiseCreated = function() { 64 var ctx = this._peekContext(); 65 if (ctx && ctx._promiseCreated == null) ctx._promiseCreated = this; 66 }; 67}; 68return Context; 69}; 70