class some {
 constructor() {
  setTimeout(this.blabla, 2000)
 }
 
 updateData() {
   //...some
 }
 
 blabla() {
  this.updateData();
 }
}class some {
 constructor() {
  this.blabla()
 }
 
 updateData() {
   //...some
 }
 
 blabla() {
  this.updateData();
 }
}setTimeout(this.blabla.bind(this), 2000)setTimeout(() => this.blabla(), 2000)