From 8c270757b21e62132f68e6b2f08dc66fe5e75f98 Mon Sep 17 00:00:00 2001
From: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
Date: Thu, 7 Oct 2021 08:41:06 -0700
Subject: [PATCH] In plain JS files, only suggestion did-you-mean errors
 (#46151)

They will have code fixes, and are tuned for high precision. Others are
not.
---
 src/compiler/checker.ts                     |  2 +-
 tests/cases/fourslash/codeFixSpellingJs9.ts | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 tests/cases/fourslash/codeFixSpellingJs9.ts

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index fbfbfc9b3d6..3d54f2e9db5 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -28454,7 +28454,7 @@ namespace ts {
             if (relatedInfo) {
                 addRelatedInfo(resultDiagnostic, relatedInfo);
             }
-            addErrorOrSuggestion(!isUncheckedJS, resultDiagnostic);
+            addErrorOrSuggestion(!isUncheckedJS || errorInfo.code !== Diagnostics.Property_0_may_not_exist_on_type_1_Did_you_mean_2.code, resultDiagnostic);
         }
 
         function containerSeemsToBeEmptyDomElement(containingType: Type) {
diff --git a/tests/cases/fourslash/codeFixSpellingJs9.ts b/tests/cases/fourslash/codeFixSpellingJs9.ts
new file mode 100644
index 00000000000..74d78c827c2
--- /dev/null
+++ b/tests/cases/fourslash/codeFixSpellingJs9.ts
@@ -0,0 +1,10 @@
+/// <reference path='fourslash.ts' />
+
+// @allowjs: true
+// @noEmit: true
+
+// @filename: noSuggestionWithoutDidYouMean.js
+//// let a = {};
+//// console.log(a.apple);
+verify.noErrors()
+verify.getSuggestionDiagnostics([])