From ff4336010cba350e724f5b32c95bf805d96de682 Mon Sep 17 00:00:00 2001
From: Ingo Schommer <ingo@silverstripe.com>
Date: Tue, 13 Sep 2016 10:08:32 +1200
Subject: [PATCH] Enforce JS var declaration with value

This caught us out recently where code did a strict type check for `myVar === undefined`.
The var was defined as `let myVar;`, without a value - so the check returned false (it's `null`).
To avoid this situation, we've decided to enforce declarations with values.
Note that preference should be given to single, immutable assignments via const where possible.

See http://eslint.org/docs/rules/init-declarations
---
 .eslintrc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.eslintrc b/.eslintrc
index b0c0c8bd..f1e3878f 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,3 +1,6 @@
 {
-  "extends": "airbnb"
+	"extends": "airbnb",
+	"rules": {
+		"init-declarations": 1
+	}
 }