From 3b8286f4747316b2fa84f79da105ed55f620b750 Mon Sep 17 00:00:00 2001
From: Nicolas Gotchac <ngotchac@gmail.com>
Date: Tue, 15 Nov 2016 18:53:53 +0100
Subject: [PATCH] Add fallback check in ABI validation #3392

---
 js/src/util/validation.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/js/src/util/validation.js b/js/src/util/validation.js
index 5fad30563..c41cae29e 100644
--- a/js/src/util/validation.js
+++ b/js/src/util/validation.js
@@ -44,7 +44,7 @@ export function validateAbi (abi, api) {
 
     // Validate each elements of the Array
     const invalidIndex = abiParsed
-      .map((o) => isValidAbiEvent(o, api) || isValidAbiFunction(o, api))
+      .map((o) => isValidAbiEvent(o, api) || isValidAbiFunction(o, api) || isAbiFallback(o))
       .findIndex((valid) => !valid);
 
     if (invalidIndex !== -1) {
@@ -74,6 +74,14 @@ function isValidAbiFunction (object, api) {
     (object.inputs && api.util.isArray(object.inputs));
 }
 
+function isAbiFallback (object) {
+  if (!object) {
+    return false;
+  }
+
+  return object.type === 'fallback';
+}
+
 function isValidAbiEvent (object, api) {
   if (!object) {
     return false;