From d197ea784fefaefdf688bb3766907beea2e53e1c Mon Sep 17 00:00:00 2001
From: Armano <armano2@users.noreply.github.com>
Date: Tue, 5 Feb 2019 02:43:21 +0100
Subject: [PATCH] fix(eslint-plugin): fix crash in
 no-unnecessary-type-assertion

---
 .../lib/rules/no-unnecessary-type-assertion.js       |  5 +++++
 .../tests/lib/rules/no-unnecessary-type-assertion.js | 12 ++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/packages/eslint-plugin/lib/rules/no-unnecessary-type-assertion.js b/packages/eslint-plugin/lib/rules/no-unnecessary-type-assertion.js
index ed1747c0d95e..34f4b6182155 100644
--- a/packages/eslint-plugin/lib/rules/no-unnecessary-type-assertion.js
+++ b/packages/eslint-plugin/lib/rules/no-unnecessary-type-assertion.js
@@ -91,6 +91,11 @@ function verifyCast(node, context, checker) {
   const originalNode = context.parserServices.esTreeNodeToTSNodeMap.get(node);
   const options = context.options[0];
 
+  if (!originalNode || !originalNode.type) {
+    // Nodes without type
+    return;
+  }
+
   if (
     options &&
     options.typesToIgnore &&
diff --git a/packages/eslint-plugin/tests/lib/rules/no-unnecessary-type-assertion.js b/packages/eslint-plugin/tests/lib/rules/no-unnecessary-type-assertion.js
index 633f1a334330..8795cff89c51 100644
--- a/packages/eslint-plugin/tests/lib/rules/no-unnecessary-type-assertion.js
+++ b/packages/eslint-plugin/tests/lib/rules/no-unnecessary-type-assertion.js
@@ -51,6 +51,18 @@ type Foo = number;
 const foo = (3 + 5) as Foo;`,
       options: [{ typesToIgnore: ['Foo'] }]
     },
+    {
+      code: `const foo = (3 + 5) as any;`,
+      options: [{ typesToIgnore: ['any'] }]
+    },
+    {
+      code: `((Syntax as any).ArrayExpression = 'foo')`,
+      options: [{ typesToIgnore: ['any'] }]
+    },
+    {
+      code: `const foo = (3 + 5) as string;`,
+      options: [{ typesToIgnore: ['string'] }]
+    },
     {
       code: `
 type Foo = number;