From 5959b5fb21107cb63daef6fa5c95e921ebf9cd1f Mon Sep 17 00:00:00 2001
From: Chiawen Chen <golopot@gmail.com>
Date: Sun, 1 Mar 2020 21:55:12 +0800
Subject: [PATCH] [fix] `prefer-stateless-function`: avoid crash on ts empty
 constructor

Fixes #2187
---
 lib/rules/prefer-stateless-function.js       |  1 +
 tests/lib/rules/prefer-stateless-function.js | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/lib/rules/prefer-stateless-function.js b/lib/rules/prefer-stateless-function.js
index ee7e6a9897..e128b2d6bf 100644
--- a/lib/rules/prefer-stateless-function.js
+++ b/lib/rules/prefer-stateless-function.js
@@ -186,6 +186,7 @@ module.exports = {
         const contextTypes = name === 'contextTypes';
         const defaultProps = name === 'defaultProps';
         const isUselessConstructor = property.kind === 'constructor' &&
+          !!property.value.body &&
           isRedundantSuperCall(property.value.body.body, property.value.params);
         const isRender = name === 'render';
         return !isDisplayName && !isPropTypes && !contextTypes && !defaultProps && !isUselessConstructor && !isRender;
diff --git a/tests/lib/rules/prefer-stateless-function.js b/tests/lib/rules/prefer-stateless-function.js
index e6a151f57b..7f7e41bb06 100644
--- a/tests/lib/rules/prefer-stateless-function.js
+++ b/tests/lib/rules/prefer-stateless-function.js
@@ -157,6 +157,18 @@ ruleTester.run('prefer-stateless-function', rule, {
           }
         }
       `
+    }, {
+      // Issue 2187
+      code: `
+        class Foo extends React.Component {
+          constructor(props)
+
+          render() {
+            return <div>{this.props.foo}</div>;
+          }
+        }
+      `,
+      parser: parsers.TYPESCRIPT_ESLINT
     }, {
       // Use this.bar
       code: `