React.js with dependency injection based on types. Snippet from Este.js (not released yet).

gistfile1.js

/** @jsx React.DOM */

goog.provide('app.drugs.react.DrugAutoComplete');

goog.require('este.thirdParty.react');
goog.require('goog.ui.ac.AutoComplete');

/**
 * @param {app.Routes} routes
 * @constructor
 */
app.drugs.react.DrugAutoComplete = function(routes) {

  this.reactClass = React.createClass(/** @lends {React.ReactComponent.prototype} */{

    render: function() {
      return (
        <div className="drug-autocomplete">
          <input
            className="form-control"
            placeholder={this.props.placeholder}
            onFocus={this.onInputFocus}
            ref="input"
          />
          <button className="search" onFocus={this.onButtonFocus} tabIndex="-1">
            search drug
          </button>
        </div>
      );
    },

    // Some Closure Library handler using injected app.Routes instance. 
    onAutoCompleteUpdate: function(e) {
      this.refs['input'].getDOMNode().value = ''
      var drugUrlName = e.row;
      routes.redirectToDrugsDetail(drugUrlName);
    },