const data = [ { name: "hcs_utils", starCount: 0 }, { name: "K", starCount: 0 }, { name: "Heroes of Wesnoth", starCount: 0 }, { name: "Leiningen", starCount: 1 }, { name: "TearDownWalls", starCount: 1 }, ]; /* // desired format { "hcs_utils": 0, "K": 0, // so on } */ const formattedDataArray = data.map((each) => { const { name, starCount } = each; return { [name.toString()]: starCount, }; }); console.log("formattedDataArray is", formattedDataArray); // with reduce const resultWithReduce = formattedDataArray.reduce((prev, current) => { return { ...prev, ...current, }; }, {}); console.log("resultWithReduce is", resultWithReduce); // without reduce let resutlWithoutReduce = {}; formattedDataArray.forEach((eachElement) => { const key = Object.keys(eachElement)[0]; const value = Object.values(eachElement)[0]; resutlWithoutReduce[key] = value; }); console.log("resultWithoutReduce is", resutlWithoutReduce);