var line5 = new Switchable(["Gwangnaru", "Cheonho", "Gangdong", "Gil-dong", "Gubeundari"]);
line5.stick(2, ["Dunchon-dong", "Olympic Park", "Bangi"]);
console.log(line5.data); 
// ['Gwangnaru','Cheonho','Gangdong','Gil-dong','Gubeundari' ]
line5.switch(1);
console.log(line5.data); 
// ['Gwangnaru','Cheonho','Gangdong','Dunchon-dong','Olympic Park','Bangi']

const array-switch = require("array-switch");