constructor(tag) {
        this._tag = tag.toLowerCase();
        this._renderedChildren = null;
        this._previousStyle = null;
        this._previousStyleCopy = null;
        this._rootNodeID = null;
        this._wrapperState = null;
        this._topLevelWrapper = null;
        this._nodeWithLegacyProperties = null;
    }
Renders the given react element with webworkers.

@constructor ReactWWComponent
@extends ReactMultiChild