promisified.js

/* Promisified functions */
runEvalScript('firstFunction()')
    .then(function(firstResult){
        return runEvalScript(`secondFunction(${firstResult})`)
    })
    .then(function(secondResult){
        return runEvalScript(`thirdFunction(${secondResult})`)
    })
    .then(function(thirdResult){
        // more promises..!
    });