text: /*!
   * 启动代码
   */
  
  define( 'kf.start', function ( require ) {
  
      window.kf = {
  
          // base
          ResourceManager: require( "resource-manager" ),
          Operator: require( "operator/operator" ),
  
          // expression
          Expression: require( "expression/expression" ),
          CompoundExpression: require( "expression/compound" ),
          TextExpression: require( "expression/text" ),
          EmptyExpression: require( "expression/empty" ),
          CombinationExpression: require( "expression/compound-exp/combination" ),
          FunctionExpression: require( "expression/compound-exp/func" ),
  
          FractionExpression: require( "expression/compound-exp/fraction" ),
          IntegrationExpression: require( "expression/compound-exp/integration" ),
          RadicalExpression: require( "expression/compound-exp/radical" ),
          ScriptExpression: require( "expression/compound-exp/script" ),
          SuperscriptExpression: require( "expression/compound-exp/binary-exp/superscript" ),
          SubscriptExpression: require( "expression/compound-exp/binary-exp/subscript" ),
          SummationExpression: require( "expression/compound-exp/summation" ),
  
          // Brackets expressoin
          BracketsExpression: require( "expression/compound-exp/brackets" )
  
      };
  
  } );