fix(query-devtools): remove experimentalDts to prevent solid-js type leak (#10421)

Author: namgi2386

.changeset/fix-solid-js-type-leak.md

@@ -0,0 +1,9 @@
+---
+"@tanstack/query-devtools": patch
+---
+
+Fix solid-js types leaking into bundled .d.ts file
+
+Remove `experimentalDts: true` and `delete tsup_option.dts` from tsup.config.ts to prevent solid-js internal types from being exposed to React projects. Reverts to rollup-plugin-dts which correctly treats solid-js as external.
+
+Fixes #10421

packages/query-devtools/tsup.config.ts

@@ -16,8 +16,6 @@ export default defineConfig(() => {
 
   tsup_options.forEach((tsup_option) => {
     tsup_option.outDir = 'build'
-    tsup_option.experimentalDts = true
-    delete tsup_option.dts
   })
 
   return tsup_options