関連ワード:  typescript test if variable is of type    typescript check if variable is of type string    typescript check if variable is of type interface    typescript check if variable is of type number    typescript check if variable is of type enum    typescript check if variable is of type object    typescript check if variable is of type date    typescript check if variable is of type array    typescript check if variable is of type boolean    typescript check if variable is type of class  
結果 : typescript test if variable is of type