code: function ComponentNodeManager(component, isAngleBracket, scope, renderNode, attrs, block, expectElement) {
      this.component = component;
      this.isAngleBracket = isAngleBracket;
      this.scope = scope;
      this.renderNode = renderNode;
      this.attrs = attrs;
      this.block = block;
      this.expectElement = expectElement;
    }
docs: In theory this should come through the env, but it should be safe to import this until we make the hook system public and it gets actively used in addons or other downstream libraries.