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
'use strict';
module.exports = function lookupLocalFields(cur, path, val) {  if (cur == null) {    return cur;  }
  if (cur._doc != null) {    cur = cur._doc;  }
  if (arguments.length >= 3) {    if (typeof cur !== 'object') {      return void 0;    }    if (val === void 0) {      return void 0;    }    if (cur instanceof Map) {      cur.set(path, val);    } else {      cur[path] = val;    }    return val;  }

  // Support populating paths under maps using `map.$*.subpath`  if (path === '$*') {    return cur instanceof Map ?      Array.from(cur.values()) :      Object.keys(cur).map(key => cur[key]);  }
  if (cur instanceof Map) {    return cur.get(path);  }
  return cur[path];};