Function enqueue

lib/internal/freeze_intrinsics.js:429–444

(val)

      // If val is something we should be freezing but aren't yet,
      // add it to freezingSet.
      function enqueue(val) {
        if (Object(val) !== val) {
          // ignore primitives
          return;
        }
        const type = typeof val;
        if (type !== 'object' && type !== 'function') {
          // NB: handle for any new cases in future
        }
        if (frozenSet.has(val) || freezingSet.has(val)) {
          // TODO: Use uncurried form
          // Ignore if already frozen or freezing
          return;
        }
        freezingSet.add(val); // TODO: Use uncurried form
      }

      function doFreeze(obj) {
        // Immediately freeze the object to ensure reactive