Flatten Results

flattenResults.js

const arrObj = [

    //Primeiro elemento

    [
        {
            "name": "Distri Equipamente Cirurgicos",
            "data": 18
        },

        {
            "name": "DNAPet",
            "data": 70
        }
    ],


    //Secundo elemento

    [
        {
            "name": "Distri Equipamente Cirurgicos",
            "data": 62
        },

        {
            "name": "Medical Pet&Thingss",
            "data": 184
        },

        {
            "name": "DNAPet",
            "data": 251.2
        }
    ],


    //Terceiro elemento

    [
        {
            "name": "DNAPet",
            "data": 2087.1
    	}
    ],


    //Quarto elemento

    [
        {
            "name": "Medical Pet&Thingss",
            "data": 80
    	}
    ]

]


const getUniqueKeys = (obj) =>
    [].concat(...obj)
      .reduce((acc, cur) =>
        acc.add(cur.name),
         new Set())


const makeObj = (objSize, ...keys) => {
    return keys.reduce((acc, cur) =>
        acc.concat({
            
            name: cur,
            data: Array(objSize).fill(null)
        
        }), [])
}


const flatten = (obj) =>
    [].concat(...obj)
      .reduce((acc, cur, index) => {

        acc[0].find(key => key.name === cur.name).data.splice(acc[1], 1, cur.data)

        if (obj[acc[1]].length + acc[2] === index + 1) {
            acc[2] += obj[acc[1]].length
            acc[1]++
        }

       return acc
    }, [makeObj(obj.length, ...getUniqueKeys(obj)), 0, 0])[0]

console.log(flatten(arrObj))

/*

[ { name: 'Distri Equipamente Cirurgicos', data: [ 18, 62, null, null ] },

{ name: 'DNAPet', data: [ 70, 251.2, 2087.1 , null] },

{ name: 'Medical Pet&Thingss', data: [ null,184, null, 80 ] } ]

*/