Add docs for invalid jsx

bluwy · Sep 28, 2023 · 96f4bc2 · 96f4bc2
1 parent 3f21f86
commit 96f4bc2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/site/rules.md b/site/rules.md
@@ -25,6 +25,10 @@ If the file has an invalid format through explicit entrypoints, e.g. the `"main"
 
 Invalid format checks are the same as [above](#implicit_index_js_invalid_format), except scoped down for explicit extensions for better error messages.
 
+## `FILE_INVALID_JSX_EXTENSION`
+
+JSX extensions such as `.cjsx`, `.mjsx`, `.ctsx`, and `.mtsx` are invalid and are usually mistaken as ESM and CJS variants of JSX. Many tooling don't support these extensions by default. Instead they should be written in plain ESM using the `.jsx` extension.
+
 ## `FILE_DOES_NOT_EXIST`
 
 The specified file does not exist.