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| import {
| looseEqual
| } from 'uni-shared'
|
| function setResult (data, k, v) {
| data[k] = v
| }
|
| function diffElmData (newObj, oldObj) {
| let result, key, cur, old
| for (key in newObj) {
| cur = newObj[key]
| old = oldObj[key]
| if (!looseEqual(old, cur)) {
| setResult(result || (result = Object.create(null)), key, cur)
| }
| }
| return result
| }
|
| export function diff (newData, oldData, result) {
| let id, cur, old
| for (id in newData) {
| cur = newData[id]
| old = oldData[id]
| if (!old) {
| setResult(result, id, cur)
| continue
| }
| const idObj = diffElmData(cur, old)
| idObj && setResult(result, id, idObj)
| }
| return result
| }
|
|
