[рони]

xcube,

const datas = [{name : 1, price : 100} , {name : 2, price : 45}],
      datab = [{name : 1, price2 : 5} , {name : 2, price2  : 33}],
      dataz = Array.from(datas, (v, i) => ({...v, ...datab[i]}));
console.log(dataz)