From 479c742471b827d837b2154f5e2f0f7b0129d31e Mon Sep 17 00:00:00 2001
From: Keith Ingram <kwingram25@gmail.com>
Date: Thu, 7 Nov 2019 10:47:56 +0100
Subject: [PATCH] Error in ABI message assertion (#1552)

* combine values

* undefined name
---
 packages/api-contract/src/base/util.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/api-contract/src/base/util.ts b/packages/api-contract/src/base/util.ts
index d394b07002..92ed765493 100644
--- a/packages/api-contract/src/base/util.ts
+++ b/packages/api-contract/src/base/util.ts
@@ -42,7 +42,7 @@ export abstract class Base<ApiType extends ApiTypes> implements ContractBase<Api
         : this.abi.abi.contract.messages.findIndex((message): boolean => nameOrIndex === message.name || nameOrIndex === stringCamelCase(message.name))
       : 0;
     const def = this.abi.abi.contract.messages[index];
-    assert(!!def, `Attempted to access a contract message that does not exist: ${name}`);
+    assert(!!def, `Attempted to access a contract message that does not exist: ${typeof nameOrIndex === 'number' ? `index ${nameOrIndex}` : nameOrIndex}`);
 
     const fn = this.abi.messages[def.name] || this.abi.messages[stringCamelCase(def.name)];
     return { index, def, fn };