Basic promise generator

#!/usr/bin/env node

var co = require('co');

var functionThatReturnsAPromise = function() {
    var promise = new Promise(function(resolve, reject) {
        setTimeout(function() {
            resolve("Some value");
        }, 1000);
    });

    return promise;
};

co(function* () {
    var result = yield functionThatReturnsAPromise();

    console.log(result);

}).catch(function(err) {
    console.log(err);
});