Loop through items, awaiting a promise return for each item.

promise-wait-in-for-loop.js

function myFunc(items){

    var fn = function addSomethingToItem(item){
        return new Promise(resolve => {

            myFirstActionFunc()
                .then( response =>{
                    item.value = response;
                    resolve(item);
                    
                })
                .catch(err => reject(err));

        });
    };

    var actions = items.map(fn);
    var results = Promise.all(actions);

    return new Promise( (resolve,reject) =>{

        results.then(data =>{
            return resolve(data);
        });

    });
    
}