diff --git a/.eslintignore b/.eslintignore
index c09782a280..0e715f2657 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -26,6 +26,7 @@ packages/core/src/variables/*.js
 packages/core/test/unit/**/*.js
 
 # TODO: remove when migrated to TS
+!packages/core/src/Site/index.js
 !markdown-it-icons.test.js
 !Site.test.js
 
diff --git a/.gitignore b/.gitignore
index fe84e40f0f..686d0ad8a0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -93,5 +93,6 @@ packages/core/test/unit/**/*.js
 # TODO: remove when migrated to TS
 !markdown-it-icons.test.js
 !Site.test.js
+!packages/core/src/Site/index.js
 
 # --- packages/core end ---
diff --git a/packages/core/src/Site/index.ts b/packages/core/src/Site/index.js
similarity index 100%
rename from packages/core/src/Site/index.ts
rename to packages/core/src/Site/index.js