关于es6中"..."的用法困惑

[Salted Fisf]

刚入坑react,最近在项目中遇到ec6中的新写法，查了资料都说的很简单，但是到了项目中就懵逼了，妹子在变成的道路上走的太艰难了，希望各位指教指教。
const drawReducer = (state: stateProps = initialState, action: Action)=>{
if( isType(action, getDrawInfo.started) ){
return { ...state, ...{ isLoadingDrawInfo: true } }
}
if( isType(action, getDrawInfo.done) ){
var bankList = action.payload.result.bankList, bankAccount
if(bankList[0]){
bankAccount = bankList[0][0]
}
return { ...state, ...{ isLoadingDrawInfo: false }, ...{ drawInfo: {...action.payload.result} }, ...{ fields: { ...state.fields, ...{ bankAccount: { value: bankAccount } } } } }
}
if( isType(action, getDrawInfo.failed) ){
return { ...state, ...{ isLoadingDrawInfo: false } }
}
if( isType(action, postDrawApply.started) ){
return { ...state, ...{ isPostingDrawApply: true } }
}
if( isType(action, postDrawApply.done) ){
return initialState
}
if( isType(action, postDrawApply.failed) ){
return { ...state, ...{ isPostingDrawApply: false } }
}
if( isType(action, fieldsChange) ){
return { ...state, ...{ fields: { ...state.fields, ...action.payload.fields } } }
}
return state
}

[zyxperfect]

暂时先没必要用es6的写法吧，好像IE浏览器对es6的promise写法什么的不太支持呢。

[Salted Fisf]

但是我们公司的前端都是用的es6的写法，看都看不懂，好烦躁，一个简单的页面看了几天都没看懂，react、redux、typescript好多新的东西全都搅在一起心累

[似梦飞花]

那是es7的 目前只能babel转换实现 指的是将...obj扩展到另一个对象里 和Object.assign({},state,obj)差不多