Foo() {
        var promises = new Array(n);
        for (var i = 0; i < n; i++) {
            promises[i] = new Array(m);
        }

        var i = 0, j;
        list1.forEach(el1 => {
            j = 0;
            list2.forEach(el2 => {
                promises[i][j] = promises[j][i] = GetSomePromise();
                j++;
            });
            i++;
        });

        Promise.all(promises).then(result => {
            // tutaj result zawiera pending promises
        }).catch(error => {
            alert(error);
        });
    }
    GetSomePromise() {
        return new Promise((resolve, reject) => {
            someFunction(
                result => { //callback
                    if (rseult !== undefined) {
                        resolve(result);
                    } else
                        reject(0);
                });
        });
    }