createWrapper method

@override ExpandoValueWrapper<V> createWrapper(K key, V value)

Creates and stores a wrapper for the given key and value.

The wrapper type depends on debug:

• false: uses ExpandoValueWrapper.
• true: uses ExpandoValueWrapperDebug (keeps a weak reference to key).

The wrapper is weakly associated with key via the internal Expando.

Implementation

@override
ExpandoValueWrapper<V> createWrapper(K key, V value) {
  final wrapper = debug
      ? ExpandoValueWrapperDebug<K, V>(key, value)
      : ExpandoValueWrapper<V>(value);
  // Weakly associate value with the key.
  _expando[key] = wrapper;
  return wrapper;
}