code: function initFacebook() {
  	if ( user.get() ) {
  		initFacebookAdvancedMatching();
  	} else {
  		window.fbq( 'init', TRACKING_IDS.facebookInit );
  
  		/*
  		 * Also initialize the FB pixel for Jetpack.
  		 * However, disable auto-config for this secondary pixel ID.
  		 * See: <https://developers.facebook.com/docs/facebook-pixel/api-reference#automatic-configuration>
  		 */
  		window.fbq( 'set', 'autoConfig', false, TRACKING_IDS.facebookJetpackInit );
  		window.fbq( 'init', TRACKING_IDS.facebookJetpackInit );
  	}
  }
docs: Initializes the Facebook pixel.
  
  When the user is logged in, additional hashed data is being forwarded.