react-use-stack/index.js

``` Stack data structure as npm package This package helps you to simulate the behaviour of a stack. If you are familiar with c++ stacks this has exactly same methods. ```

let stack  = [];

module.exports.push = function(x){
    stack.push(x);
}

module.exports.pop = function(){
    if(stack.length === 0){
        return -1;
    }
    stack.pop();
    return 1;
}

module.exports.top = function(){
    if(stack.length === 0){
        return "empty";
    }
    return stack[stack.length-1];
}

module.exports.isEmpty = function(){
    return stack.length === 0;
}

module.exports.size = function(){
    return stack.length;
}