all files / src/ tag.js

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
1×
 
1×
 
1×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1×
19×
 
 
1×
160×
160×
144×
 
16×
2×
 
14×
 
 
1×
49×
49×
1×
 
49×
 
 
import * as gen from './generators';
 
const TYPE_POSITION_IN_TAG = 8;
 
const tagMap = {
  '[object Null]': gen.LEAF,
  '[object Undefined]': gen.LEAF,
  '[object Boolean]': gen.LEAF,
  '[object Number]': gen.LEAF,
  '[object String]': gen.LEAF, // strings are excluded although they are iterable
  '[object Symbol]': gen.LEAF,
  '[object Date]': gen.LEAF,
  '[object RegExp]': gen.LEAF,
  '[object Function]': gen.LEAF,
  '[object GeneratorFunction]': gen.LEAF,
  '[object Promise]': gen.LEAF,
  '[object Array]': gen.arrayIterator,
  '[object Set]': gen.genericIterator,
  '[object Map]': gen.mapIterator,
  '[object UserDefinedIterable]': gen.genericIterator,
  '[object NonIterableObject]': gen.objectIterator
};
 
export function getTypeFromTag(tag) {
  return tag.slice(TYPE_POSITION_IN_TAG, tag.length - 1);
}
 
export function getTag(element) {
  const stringTag = Object.prototype.toString.call(element);
  if (stringTag in tagMap) {
    return stringTag;
  }
  if (typeof element[Symbol.iterator] === 'function') {
    return '[object UserDefinedIterable]';
  }
  return '[object NonIterableObject]';
}
 
export function getTagMap(config) {
  const myTagMap = Object.create(tagMap);
  if (!config.iterateOverObject) {
    myTagMap['[object NonIterableObject]'] = gen.LEAF;
  }
  return myTagMap;
}