From 51ffcd0b7abe2364db5f8d257ae260b8107bbecc Mon Sep 17 00:00:00 2001
From: Joshua Stiefer <facedelajunk@gmail.com>
Date: Sat, 18 Nov 2017 11:29:34 -0700
Subject: [PATCH] Prevent jsx-no-bind crash

The rule would assume a variable is initialized when checking a
VariableDeclarator node.
---
 lib/rules/jsx-no-bind.js       |  3 +++
 tests/lib/rules/jsx-no-bind.js | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/lib/rules/jsx-no-bind.js b/lib/rules/jsx-no-bind.js
index aef6a6aab8..f463f1c992 100644
--- a/lib/rules/jsx-no-bind.js
+++ b/lib/rules/jsx-no-bind.js
@@ -135,6 +135,9 @@ module.exports = {
       },
 
       VariableDeclarator(node) {
+        if (!node.init) {
+          return;
+        }
         const blockAncestors = getBlockStatementAncestors(node);
         const variableViolationType = getNodeViolationType(node.init);
 
diff --git a/tests/lib/rules/jsx-no-bind.js b/tests/lib/rules/jsx-no-bind.js
index ec467f98f7..244acaed56 100644
--- a/tests/lib/rules/jsx-no-bind.js
+++ b/tests/lib/rules/jsx-no-bind.js
@@ -258,6 +258,17 @@ ruleTester.run('jsx-no-bind', rule, {
         '};'
       ].join('\n'),
       parser: 'babel-eslint'
+    },
+    {
+      // issue #1543: don't crash on uninitialized variables
+      code: [
+        'class Hello extends Component {',
+        '  render() {',
+        '    let click;',
+        '    return <div onClick={onClick}>Hello</div>;',
+        '  }',
+        '}'
+      ].join('\n')
     }
   ],