objectFactory - object composition

function objectFactory(str) {

    let arr = JSON.parse(str).reduce((acc, cur) => {
        return acc = Object.assign(acc, cur)
    },{})
    return arr;
}

objectFactory(
    `[
        {"canMove": true},
        {"canMove":true, "doors": 4},
        {"capacity": 5}
    ]`
)

objectFactory(`[{"canFly": true},{"canMove":true, "doors": 4},{"capacity": 255},{"canFly":true, "canLand": true}]`)