Foreach with Promise.all for faster execution than For Loop

data.js

module.exports = [
    {
        id:1,
        data:1
    },
    {
        id:2,
        data:2
    },
    {
        id:3,
        data:3
    },
    {
        id:4,
        data:4
    },
    {
        id:5,
        data:5
    },
    {
        id:6,
        data:6
    },
    {
        id:7,
        data:7
    },
    {
        id:8,
        data:8
    },
    {
        id:9,
        data:9
    },
    {
        id:10,
        data:10
    }
]

for.js

let object = require('./data');
let CONSTANTS = {
    TIMEOUT:100
}



(async()=>{

    let promise3 = async () =>{

        return new Promise(function(resolve, reject) {
            setTimeout(resolve, CONSTANTS.TIMEOUT, 'foo');
        });

    }
    
    let start_time = new Date().getTime();
    for(let i=0; i<object.length; i++){
    
        object[i]['data'] = object[i]['data'] + 2;
        await promise3();
        console.log("LOOP",i);

    };
    let end_time = (new Date()).getTime();
    console.log("EXECUTION TIME",(end_time-start_time));
    console.log("DATA",object);
})();

foreach.js

let object = require('./data');
let CONSTANTS = {
    TIMEOUT:100
}

let promises = [];



let two_start = (new Date()).getTime();

object.forEach(o=>{

    
    promises.push(
        new Promise((resolve, reject)=>{
            //resolve(1);
            o['data'] = o['data'] + 2;
            setTimeout(resolve(o), CONSTANTS.TIMEOUT);
        })
    );   

});

Promise.all(promises).then(x=>{

    let MODIFIED_DATA = x;

    let two_end = (new Date()).getTime();
    
    console.log("EXECUTION TIME",(two_end-two_start));

    console.log("DATA", MODIFIED_DATA)

})