From ca76f7691a00eaeb118e324ed6296125f22917a9 Mon Sep 17 00:00:00 2001
From: Gabriel Montes <gabriel@bloq.com>
Date: Thu, 22 Nov 2018 23:34:24 -0300
Subject: [PATCH] Avoid rejecting a promise if listening on error

---
 packages/web3-core-method/src/index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/web3-core-method/src/index.js b/packages/web3-core-method/src/index.js
index d08c4977918..efe8fd974a7 100644
--- a/packages/web3-core-method/src/index.js
+++ b/packages/web3-core-method/src/index.js
@@ -536,8 +536,10 @@ Method.prototype.buildCall = function() {
                         return method.accounts.signTransaction(_.omit(tx, 'from'), wallet.privateKey)
                             .then(sendSignedTx)
                             .catch(function (err) {
-                                if (defer.eventEmitter.emit) {
+                                if (_.isFunction(defer.eventEmitter.listeners) && defer.eventEmitter.listeners('error').length) {
                                     defer.eventEmitter.emit('error', err);
+                                    defer.eventEmitter.removeAllListeners();
+                                    defer.eventEmitter.catch(function () {});
                                 }
                                 defer.reject(err);
                             });