JSFiddle - React, Tailwind, and code Playground

JavaScript

function zip(a, b) {
    var len = Math.min(a.length, b.length),
        zipped = [],
        i, obj;
    console.log(a)
    for (i = 0; i < len; i++) {
        obj= {};
        obj[a[i].branchids] = b[i].branchnames;
        zipped.push(obj);
    }
    return zipped;
}

console.log(zip([{"branchids":"5006"},{"branchids":"5007"},{"branchids":"5009"}]      ,
[{"branchnames":"GrooveToyota"},{"branchnames":"GrooveSubaru"},{"branchnames":"GrooveFord"}] ))