From 42501c658e98f69cdb1194d5222b003c6cfc0967 Mon Sep 17 00:00:00 2001
From: Damien Arrachequesne <damien.arrachequesne@gmail.com>
Date: Wed, 11 Oct 2017 07:33:55 +0200
Subject: [PATCH] [revert] [refactor] Remove usuless indexof dependency (#582)

This reverts commit 6043c49e91edd402da0a344ccadf3a3e9624628f.
---
 lib/socket.js | 3 ++-
 package.json  | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/socket.js b/lib/socket.js
index 269ef74c2..d2eb44cda 100644
--- a/lib/socket.js
+++ b/lib/socket.js
@@ -5,6 +5,7 @@
 var transports = require('./transports/index');
 var Emitter = require('component-emitter');
 var debug = require('debug')('engine.io-client:socket');
+var index = require('indexof');
 var parser = require('engine.io-parser');
 var parseuri = require('parseuri');
 var parseqs = require('parseqs');
@@ -736,7 +737,7 @@ Socket.prototype.onClose = function (reason, desc) {
 Socket.prototype.filterUpgrades = function (upgrades) {
   var filteredUpgrades = [];
   for (var i = 0, j = upgrades.length; i < j; i++) {
-    if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
+    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
   }
   return filteredUpgrades;
 };
diff --git a/package.json b/package.json
index 6bdb69775..ea37c0f80 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "debug": "~2.6.9",
     "engine.io-parser": "~2.1.1",
     "has-cors": "1.1.0",
+    "indexof": "0.0.1",
     "parseqs": "0.0.5",
     "parseuri": "0.0.5",
     "ws": "~2.3.1",