es6 vs es7

es6vses7.js

// Set up our async runners...
let doSomething = () => {
        return new Promise((resolve,reject) => {
            console.log('I like this...')
            setTimeout(() => resolve('hi'), 1000);
        });
    },
    appendSomething = (result1) => {
        return new Promise((resolve,reject) => {
            console.log('well maybe..')
            setTimeout(() => resolve(result1 + ' hey there'), 1000);
        });
    }

// Plain promises...
doSomething()
.then(appendSomething)
.then((result) => {
    console.log(result);
});

// ES7
async () => {
    let result = await doSomething(),
        result2 = await appendSomething(result);
    console.log(result2)
}();