RunKit + npm: promise-array-runner

const {PromiseArrayRunner} = require("promise-array-runner"); let methodOne = (startingObj) => { startingObj.a = 1; return new Promise( (resolve, reject) => { resolve(startingObj); }); }; let arrayOfMethods = [ methodOne ]; PromiseArrayRunner.run(arrayOfMethods, {}).then( (resultObj) => { console.log(resultObj); });