SOURCE

let testList = [
    {
        name: 'zws001',
        id: "test_001"


    },
    {
        name: 'zws001',
        id: "test_001"


    },
    {
        name: 'zws001',
        id: "test_001"

    }
]
// let refList = []
// testList.forEach(item => {
//     refList.push(item)
//     let hash = {}
//     refList = refList.reduce((item, next) => {
//         console.log('next---',next)
//         // 根据 id 去重
//         if (!hash[next.id]) {
//             hash[next.id] = true
//             item.push(next)
//         }
//         return item
//     }, [])
// })
let refList = []
refList.push(...testList)
testList.forEach(item => {
    refList.push(item)
    refList = refList.reduce((item, next) => {
        console.log('next---', next)
        // 根据 id 去重
        if (!hash[next.id]) {
            hash[next.id] = true
            item.push(next)
        }
        return item
    }, [])
})
console.log('---refList', refList)