1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
'use strict';
var isArray = require('core-js/library/fn/array/is-array');
var objectKeys = require('core-js/library/fn/object/keys');
var indexOf = require('core-js/library/fn/array/index-of');
var Map = require('core-js/library/fn/map');
var reduce = require('core-js/library/fn/array/reduce');
module.exports = function cloneWithWhitelist (astWhiteList) {
var whitelist = reduce(objectKeys(astWhiteList), function (props, key) {
var propNames = astWhiteList[key];
var prepend = (indexOf(propNames, 'type') === -1) ? ['type'] : [];
props[key] = prepend.concat(propNames || []);
return props;
}, {});
function cloneNodeOrObject (obj, seen) {
var props = obj.type ? whitelist[obj.type] : null;
if (props) {
return cloneNode(obj, props, seen);
} else {
return cloneObject(obj, seen);
}
}
function cloneArray (ary, seen) {
var i = ary.length;
var clone = [];
while (i--) {
clone[i] = cloneOf(ary[i], seen);
}
return clone;
}
function cloneNode (node, props, seen) {
var i, len, key;
var clone = {};
for (i = 0, len = props.length; i < len; i += 1) {
key = props[i];
if (node.hasOwnProperty(key)) {
clone[key] = cloneOf(node[key], seen);
}
}
return clone;
}
function cloneObject (obj, seen) {
var props = objectKeys(obj);
var i, len, key, value;
var clone = {};
for (i = 0, len = props.length; i < len; i += 1) {
key = props[i];
value = obj[key];
if (seen.has(value)) {
continue;
}
clone[key] = cloneOf(value, seen);
}
return clone;
}
function cloneOf (val, seen) {
if (typeof val === 'object' && val !== null) {
seen.set(val, true);
if (val instanceof RegExp) {
return new RegExp(val);
} else if (isArray(val)) {
return cloneArray(val, seen);
} else {
return cloneNodeOrObject(val, seen);
}
} else {
return val;
}
}
function cloneRoot (obj) {
var seen = new Map();
seen.set(obj, true);
return cloneNodeOrObject(obj, seen);
}
return cloneRoot;
};
|
