export class Frame {
  constructor (value) {
    this.value = value;
    this.next = null;
  }
}



export class Stack {
    constructor() {
        this.root = null;
    }



    push(frame) {
        let newFrame;
        let current = this.root;

        if(this.root === null){
            this.root = newFrame;
        }else{
            newFrame.next = this.root;
            this.root = newFrame;
        }
    }


}