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function getExpandedData(list, res = []) {
    for (const item of list) {
        const arr = []
        arr.push({
            id: item.id,
            name: item.name
        })
        if (item.children) {
            getExpandedData(item.children, arr)
        }
        res.push(...arr)
    }
    return res
}

const res = getExpandedData(data, [])
console.log(res)