From 6abe055af050d773a92cafd6b5df461540fcb691 Mon Sep 17 00:00:00 2001
From: Gavin Barron <GavinB@intergen.org.nz>
Date: Tue, 26 Mar 2019 23:28:46 -0700
Subject: [PATCH] fix: explicit-function-return-type

Ensuring that class arrow methods are validated for a return type. Fixes #348
---
 .../src/rules/explicit-function-return-type.ts             | 1 +
 .../tests/rules/explicit-function-return-type.test.ts      | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/packages/eslint-plugin/src/rules/explicit-function-return-type.ts b/packages/eslint-plugin/src/rules/explicit-function-return-type.ts
index d767959c29f..9cb9c983104 100644
--- a/packages/eslint-plugin/src/rules/explicit-function-return-type.ts
+++ b/packages/eslint-plugin/src/rules/explicit-function-return-type.ts
@@ -114,6 +114,7 @@ export default util.createRule<Options, MessageIds>({
     ): void {
       if (
         options.allowExpressions &&
+        node.type !== AST_NODE_TYPES.ArrowFunctionExpression &&
         node.parent &&
         node.parent.type !== AST_NODE_TYPES.VariableDeclarator &&
         node.parent.type !== AST_NODE_TYPES.MethodDefinition
diff --git a/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts b/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
index 932e50e9714..6786b92f4b1 100644
--- a/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
+++ b/packages/eslint-plugin/tests/rules/explicit-function-return-type.test.ts
@@ -41,6 +41,7 @@ class Test {
   method(): void {
     return;
   }
+  arrow = (): string => 'arrow';
 }
             `,
     },
@@ -171,6 +172,7 @@ class Test {
   method() {
     return;
   }
+  arrow = () => 'arrow';
 }
             `,
       errors: [
@@ -184,6 +186,11 @@ class Test {
           line: 8,
           column: 9,
         },
+        {
+          messageId: 'missingReturnType',
+          line: 11,
+          column: 11,
+        },
       ],
     },
     {