src/router3.js
function dispatchShow_(element, detail) {

    /**
     * Dispatch show event if URL's fragment matches with a route
     *
     * @event MaterialRouter3#show
     * @type {CustomEvent}
     * @property {HTMLElement} router - The router that dispatches
     *   this event
     * @property {String} param1
     * @property {String} param2
     * @property {String} ...
     * @property {String} paramN - The values extracted
     *   from the URL's fragment. These params go in order of appearance
     *   from left to right.
     */
    element.dispatchEvent(new CustomEvent('show', {
      bubbles: true,
      detail: detail
    }));
  }
function dispatchShow_(element, detail) {

    /**
     * Dispatch show event if URL's fragment matches with a route
     *
     * @event MaterialRouter3#show
     * @type {CustomEvent}
     * @property {HTMLElement} router - The router that dispatches
     *   this event
     * @property {String} param1
     * @property {String} param2
     * @property {String} ...
     * @property {String} paramN - The values extracted
     *   from the URL's fragment. These params go in order of appearance
     *   from left to right.
     */
    element.dispatchEvent(new CustomEvent('show', {
      bubbles: true,
      detail: detail
    }));
  }
function dispatchShow_ ( element , detail ) { /**
     * Dispatch show event if URL's fragment matches with a route
     *
     * @event MaterialRouter3#show
     * @type {CustomEvent}
     * @property {HTMLElement} router - The router that dispatches
     *   this event
     * @property {String} param1
     * @property {String} param2
     * @property {String} ...
     * @property {String} paramN - The values extracted
     *   from the URL's fragment. These params go in order of appearance
     *   from left to right.
     */ element . dispatchEvent ( new CustomEvent ( 'show' , { bubbles : true , detail : detail } ) ) ; }
Dispatch show event

@param {HTMLElement} element - The element
@param {Object} detail - The extracted params
@private
Dispatch show event