better guard

internal-tooling/README.md

@@ -23,3 +23,6 @@ in tsconfig.json for any other workspace package specified by package.json
 as a dependency, peer-dependency, or dev-dependency.
 
 Will also ensure the proper settings for composite etc. are in use.
+
+For packages that should emit types (any non-test app package) it will
+ensure that the declarationDir is added to the files array in package.json.

internal-tooling/src/sync-references.ts

@@ -282,8 +282,8 @@ async function main() {
 
     if (pkgEdited || tsconfigEdited) {
       anyEdited = true;
+      await project.save({ pkgEdited, configEdited: tsconfigEdited });
     }
-    await project.save({ pkgEdited, configEdited: tsconfigEdited });
   });
 
   if (anyEdited) await runPrettier();