diff --git a/lib/_tsc.js b/lib/_tsc.js
index b1286228d17f4..d06c7ff6caf0c 100644
--- a/lib/_tsc.js
+++ b/lib/_tsc.js
@@ -15067,7 +15067,7 @@ function tryGetModuleSpecifierFromDeclaration(node) {
   }
 }
 function shouldRewriteModuleSpecifier(specifier, compilerOptions) {
-  return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier);
+  return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier) && hasTSFileExtension(specifier);
 }
 function getExternalModuleName(node) {
   switch (node.kind) {
diff --git a/lib/typescript.js b/lib/typescript.js
index 1ca07e0bd08f9..366e30eeb7daa 100644
--- a/lib/typescript.js
+++ b/lib/typescript.js
@@ -18774,7 +18774,7 @@ function tryGetImportFromModuleSpecifier(node) {
   }
 }
 function shouldRewriteModuleSpecifier(specifier, compilerOptions) {
-  return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier);
+  return !!compilerOptions.rewriteRelativeImportExtensions && pathIsRelative(specifier) && !isDeclarationFileName(specifier) && hasTSFileExtension(specifier);
 }
 function getExternalModuleName(node) {
   switch (node.kind) {