From 3ee2b95689943c720d47db01b4a1da2b6ab9d9ff Mon Sep 17 00:00:00 2001
From: TypeScript Bot <23042052+typescript-bot@users.noreply.github.com>
Date: Tue, 5 Nov 2024 12:51:46 -0800
Subject: [PATCH] =?UTF-8?q?=F0=9F=A4=96=20Pick=20PR=20#60415=20(Fix=20fals?=
 =?UTF-8?q?e=20positive=20rewriteRelativeI...)=20into=20release-5.7=20(#60?=
 =?UTF-8?q?424)?=
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Co-authored-by: Andrew Branch <andrewbranch@users.noreply.github.com>
---
 src/compiler/utilities.ts                         |  2 +-
 tests/baselines/reference/nonTSExtensions.js      | 14 ++++++++++++++
 .../nonTSExtensions.ts                            | 15 +++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 tests/baselines/reference/nonTSExtensions.js
 create mode 100644 tests/cases/conformance/externalModules/rewriteRelativeImportExtensions/nonTSExtensions.ts

diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index 75862dde0b9db..d12ae297b81ad 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -4306,7 +4306,7 @@ export function tryGetImportFromModuleSpecifier(node: StringLiteralLike): AnyVal
 
 /** @internal */
 export function shouldRewriteModuleSpecifier(specifier: string, compilerOptions: CompilerOptions): boolean {
-    return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier);
+    return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier) && hasTSFileExtension(specifier);
 }
 
 /** @internal */
diff --git a/tests/baselines/reference/nonTSExtensions.js b/tests/baselines/reference/nonTSExtensions.js
new file mode 100644
index 0000000000000..117d199aa7df9
--- /dev/null
+++ b/tests/baselines/reference/nonTSExtensions.js
@@ -0,0 +1,14 @@
+//// [tests/cases/conformance/externalModules/rewriteRelativeImportExtensions/nonTSExtensions.ts] ////
+
+//// [example.json]
+{}
+
+//// [styles.d.css.ts]
+export {};
+
+//// [index.mts]
+import {} from "./example.json" with { type: "json" }; // Ok
+import {} from "./styles.css"; // Ok
+
+//// [index.mjs]
+export {};
diff --git a/tests/cases/conformance/externalModules/rewriteRelativeImportExtensions/nonTSExtensions.ts b/tests/cases/conformance/externalModules/rewriteRelativeImportExtensions/nonTSExtensions.ts
new file mode 100644
index 0000000000000..e7d6f2107d8d9
--- /dev/null
+++ b/tests/cases/conformance/externalModules/rewriteRelativeImportExtensions/nonTSExtensions.ts
@@ -0,0 +1,15 @@
+// @module: nodenext
+// @rewriteRelativeImportExtensions: true
+// @allowArbitraryExtensions: true
+// @resolveJsonModule: true
+// @noTypesAndSymbols: true
+
+// @Filename: example.json
+{}
+
+// @Filename: styles.d.css.ts
+export {};
+
+// @Filename: index.mts
+import {} from "./example.json" with { type: "json" }; // Ok
+import {} from "./styles.css"; // Ok
\ No newline at end of file