function getIn(o, path) {
    if (path.length === 0) return o
    if (typeof o !== 'object') return
    return get(o[path[0]], path.slice(1, path.length))
}
function setIn(o, path, v) {
    let count = 0
    let parent = o
    while (count < path.length) {
        const current = getIn(o, path.slice(0, count + 1))
        if (typeof current === 'object') {
            parent = current
        } else {
            parent[path[count]] = {}
            parent = parent[path[count]]
        }
        count++
    }
    parent[path[count - 1]] = v
    return o
}