JSFiddle - React, Tailwind, and code Playground

JavaScript

data = ["HSP - FS", "FS-M", "Lo Co", "GO A", "CQM","whatever"];

type = ["Epic","Sub - Epic","Sub - Epic","Epic","Sub - Epic","Story"];

var array = [];

for(var i=0; i < data.length; ++i)
{
    var t = type[i];
    var d = data[i];

    if (t == "Epic")
        array.push({ "Epic": d});
    else
    {
        array[array.length-1][t] = d;    
    }
}

console.log(JSON.stringify(array));