From c3042cfd27a2dea95c96a36b6f9243b4cdf14518 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <jlhwung@gmail.com>
Date: Thu, 2 Apr 2020 11:12:13 -0400
Subject: [PATCH] =?UTF-8?q?fix:=20don=E2=80=99t=20add=20function=20name=20?=
 =?UTF-8?q?when=20operator=20is=20not=20`=3D`=20(#11361)?=
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---
 packages/babel-helper-function-name/src/index.js                | 2 +-
 .../test/fixtures/function-name/function-assignment/input.js    | 2 ++
 .../test/fixtures/function-name/function-assignment/output.js   | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/babel-helper-function-name/src/index.js b/packages/babel-helper-function-name/src/index.js
index bdce1f819c..b736d76f57 100644
--- a/packages/babel-helper-function-name/src/index.js
+++ b/packages/babel-helper-function-name/src/index.js
@@ -179,7 +179,7 @@ export default function({ node, parent, scope, id }, localBinding = false) {
         return;
       }
     }
-  } else if (t.isAssignmentExpression(parent)) {
+  } else if (t.isAssignmentExpression(parent, { operator: "=" })) {
     // foo = function () {};
     id = parent.left;
   } else if (!id) {
diff --git a/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/input.js b/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/input.js
index e8efb0c87a..3725d0fe72 100644
--- a/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/input.js
+++ b/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/input.js
@@ -11,3 +11,5 @@ baz = 12;
 bar = function() {
   bar();
 };
+
+qux += function() {}
diff --git a/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/output.js b/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/output.js
index d0313b653d..8527bf833e 100644
--- a/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/output.js
+++ b/packages/babel-plugin-transform-function-name/test/fixtures/function-name/function-assignment/output.js
@@ -23,3 +23,5 @@ bar = function (_bar) {
 }(function () {
   bar();
 });
+
+qux += function () {};