Downgrade eta to 3.5.0 to fix module resolution error (#1459)

Signed-off-by: Sora Morimoto <sora@morimoto.io>

Author: smorimoto

.changeset/downgrade-eta-to-fix-exports.md

@@ -0,0 +1,15 @@
+---
+"swagger-typescript-api": patch
+---
+
+Downgrade eta from 4.0.1 to 3.5.0 to fix module resolution error.
+
+After the upgrade to eta@4.0.1 in version 13.2.11, API generation started
+failing with `ERR_PACKAGE_PATH_NOT_EXPORTED: No "exports" main defined in
+eta/package.json`. This issue is caused by incorrect package export
+configuration in eta@4.0.1, which is tracked in the upstream repository.
+
+Downgrading to eta@3.5.0 resolves the module resolution error whilst
+maintaining compatibility with the existing template system.
+
+Fixes #1427.

package.json

@@ -53,7 +53,7 @@
     "c12": "^3.3.0",
     "citty": "^0.1.6",
     "consola": "^3.4.2",
-    "eta": "^4.0.1",
+    "eta": "^3.5.0",
     "lodash": "^4.17.21",
     "nanoid": "^5.1.6",
     "openapi-types": "^12.1.3",