1 |
|
2 |
|
3 | import { _Set as Set, isObject } from '../util/index'
|
4 | import type { SimpleSet } from '../util/index'
|
5 | import VNode from '../vdom/vnode'
|
6 |
|
7 | const seenObjects = new Set()
|
8 |
|
9 |
|
10 |
|
11 |
|
12 |
|
13 |
|
14 | export function traverse (val: any) {
|
15 | _traverse(val, seenObjects)
|
16 | seenObjects.clear()
|
17 | }
|
18 |
|
19 | function _traverse (val: any, seen: SimpleSet) {
|
20 | let i, keys
|
21 | const isA = Array.isArray(val)
|
22 | if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
|
23 | return
|
24 | }
|
25 | if (val.__ob__) {
|
26 | const depId = val.__ob__.dep.id
|
27 | if (seen.has(depId)) {
|
28 | return
|
29 | }
|
30 | seen.add(depId)
|
31 | }
|
32 | if (isA) {
|
33 | i = val.length
|
34 | while (i--) _traverse(val[i], seen)
|
35 | } else {
|
36 | keys = Object.keys(val)
|
37 | i = keys.length
|
38 | while (i--) _traverse(val[keys[i]], seen)
|
39 | }
|
40 | }
|