cleanup

frontend/src/asset_manager.ts

@@ -184,9 +184,7 @@ export const resolveDocumentAssetUrl = (
   const view = createAssetView(asset);
   const object = view.getPrimaryObject();
   const url = object?.url || view.getPrimaryUrl();
-  const expiresAt = Number.isFinite(object?.expires_at)
-    ? Number(object?.expires_at)
-    : resolveAssetExpiresAt(asset);
+  const expiresAt = object?.expires_at ?? resolveAssetExpiresAt(asset);
   const now = Date.now();
   if (url && (!expiresAt || expiresAt > now)) {
     return url;
@@ -242,7 +240,7 @@ class AssetManager {
     const isPrimarySatisfied = () => {
       const object = view.getObject(1);
       if (object?.url) {
-        const objectExpiresAt = Number.isFinite(object.expires_at) ? Number(object.expires_at) : null;
+        const objectExpiresAt = object.expires_at ?? null;
         if (!objectExpiresAt || objectExpiresAt > now) {
           return true;
         }