docs/bundle.js
function PureComponent(props, context, updater) {
  // Duplicated from Component.
  this.props = props;
  this.context = context;
  this.refs = emptyObject;
  // We initialize the default updater but the real one gets injected by the
  // renderer.
  this.updater = updater || ReactNoopUpdateQueue;
}
function PureComponent(props, context, updater) {
  // Duplicated from Component.
  this.props = props;
  this.context = context;
  this.refs = emptyObject;
  // We initialize the default updater but the real one gets injected by the
  // renderer.
  this.updater = updater || ReactNoopUpdateQueue;
}
Base class helpers for the updating state of a component.