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context.js
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"use strict"; module.exports = function(Promise) { var longStackTraces = false; var contextStack = []; Promise.prototype._promiseCreated = function() {}; Promise.prototype._pushContext = function() {}; Promise.prototype._popContext = function() {return null;}; Promise._peekContext = Promise.prototype._peekContext = function() {}; function Context() { this._trace = new Context.CapturedTrace(peekContext()); } Context.prototype._pushContext = function () { if (this._trace !== undefined) { this._trace._promiseCreated = null; contextStack.push(this._trace); } }; Context.prototype._popContext = function () { if (this._trace !== undefined) { var trace = contextStack.pop(); var ret = trace._promiseCreated; trace._promiseCreated = null; return ret; } return null; }; function createContext() { if (longStackTraces) return new Context(); } function peekContext() { var lastIndex = contextStack.length - 1; if (lastIndex >= 0) { return contextStack[lastIndex]; } return undefined; } Context.CapturedTrace = null; Context.create = createContext; Context.deactivateLongStackTraces = function() {}; Context.activateLongStackTraces = function() { var Promise_pushContext = Promise.prototype._pushContext; var Promise_popContext = Promise.prototype._popContext; var Promise_PeekContext = Promise._peekContext; var Promise_peekContext = Promise.prototype._peekContext; var Promise_promiseCreated = Promise.prototype._promiseCreated; Context.deactivateLongStackTraces = function() { Promise.prototype._pushContext = Promise_pushContext; Promise.prototype._popContext = Promise_popContext; Promise._peekContext = Promise_PeekContext; Promise.prototype._peekContext = Promise_peekContext; Promise.prototype._promiseCreated = Promise_promiseCreated; longStackTraces = false; }; longStackTraces = true; Promise.prototype._pushContext = Context.prototype._pushContext; Promise.prototype._popContext = Context.prototype._popContext; Promise._peekContext = Promise.prototype._peekContext = peekContext; Promise.prototype._promiseCreated = function() { var ctx = this._peekContext(); if (ctx && ctx._promiseCreated == null) ctx._promiseCreated = this; }; }; return Context; };