From 63d79faa85df1cc090837fc49befb5076b50203b Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Thu, 27 Sep 2018 11:51:11 +0200
Subject: Fix linter errors

---
 packages/base-contract/src/index.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index 538c87431..981e6fca6 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -22,7 +22,8 @@ export interface EthersInterfaceByFunctionSignature {
 
 const REVERT_ERROR_SELECTOR = '08c379a0';
 const REVERT_ERROR_SELECTOR_OFFSET = 2;
-const REVERT_ERROR_SELECTOR_END = 10;
+const REVERT_ERROR_SELECTOR_BYTES_LENGTH = 4;
+const REVERT_ERROR_SELECTOR_END = REVERT_ERROR_SELECTOR_OFFSET + REVERT_ERROR_SELECTOR_BYTES_LENGTH * 2;
 
 export class BaseContract {
     protected _ethersInterfacesByFunctionSignature: EthersInterfaceByFunctionSignature;
@@ -90,7 +91,7 @@ export class BaseContract {
         if (rawCallResult.slice(REVERT_ERROR_SELECTOR_OFFSET, REVERT_ERROR_SELECTOR_END) === REVERT_ERROR_SELECTOR) {
             const revertReason = ethers.utils.defaultAbiCoder.decode(
                 ['string'],
-                ethers.utils.hexDataSlice(rawCallResult, 4),
+                ethers.utils.hexDataSlice(rawCallResult, REVERT_ERROR_SELECTOR_BYTES_LENGTH),
             );
             throw new Error(revertReason);
         }
-- 
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