Fail hard only for .jsx?|tsx? if default export is missing (#9232)

Makes it so that filetypes like .mdx pass through
gatsbyjs · Oct 19, 2018 · 738cfc1 · 738cfc1
1 parent e39d4c2
commit 738cfc1
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/gatsby/src/redux/actions.js b/packages/gatsby/src/redux/actions.js
@@ -266,7 +266,9 @@ ${reservedFields.map(f => `  * "${f}"`).join(`\n`)}
     if (
       !fileContent.includes(`export default`) &&
       !fileContent.includes(`module.exports`) &&
-      !fileContent.includes(`exports.default`)
+      !fileContent.includes(`exports.default`) &&
+      // this check only applies to js and ts, not mdx
+      /\.(jsx?|tsx?)/.test(path.extname(fileName))
     ) {
       includesDefaultExport = false
     }