From 211b1b5ae9f3e7d54b98b0522a80194f7c803a69 Mon Sep 17 00:00:00 2001
From: Eran Shabi <eran514@gmail.com>
Date: Thu, 25 Jul 2019 18:34:31 +0300
Subject: [PATCH] =?UTF-8?q?fix(eslint-plugin):=20[prefer-readonly]=20TypeE?=
 =?UTF-8?q?rror=20when=20having=20comp=E2=80=A6=20(#761)?=
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---
 packages/eslint-plugin/src/rules/prefer-readonly.ts        | 2 +-
 packages/eslint-plugin/tests/rules/prefer-readonly.test.ts | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/eslint-plugin/src/rules/prefer-readonly.ts b/packages/eslint-plugin/src/rules/prefer-readonly.ts
index c82aaf45ab3..451515d18ed 100644
--- a/packages/eslint-plugin/src/rules/prefer-readonly.ts
+++ b/packages/eslint-plugin/src/rules/prefer-readonly.ts
@@ -179,7 +179,7 @@ export default util.createRule<Options, MessageIds>({
         const tsNode = parserServices.esTreeNodeToTSNodeMap.get<
           ts.PropertyAccessExpression
         >(node);
-        if (classScopeStack.length !== 0) {
+        if (classScopeStack.length !== 0 && !node.computed) {
           handlePropertyAccessExpression(
             tsNode,
             tsNode.parent,
diff --git a/packages/eslint-plugin/tests/rules/prefer-readonly.test.ts b/packages/eslint-plugin/tests/rules/prefer-readonly.test.ts
index a5ff4734e1c..5b2a6687339 100644
--- a/packages/eslint-plugin/tests/rules/prefer-readonly.test.ts
+++ b/packages/eslint-plugin/tests/rules/prefer-readonly.test.ts
@@ -215,6 +215,11 @@ ruleTester.run('prefer-readonly', rule, {
         },
       ],
     },
+    `class TestComputedParameter {
+      public mutate() {
+        this['computed'] = 1;
+      }
+    }`,
   ],
   invalid: [
     {