1 var baseKeys = require(
'./_baseKeys'),
2 getTag = require(
'./_getTag'),
3 isArrayLike = require(
'./isArrayLike'),
4 isString = require(
'./isString'),
5 stringSize = require(
'./_stringSize');
8 var mapTag =
'[object Map]',
9 setTag =
'[object Set]';
32 function size(collection) {
33 if (collection == null) {
36 if (isArrayLike(collection)) {
37 return isString(collection) ? stringSize(collection) : collection.length;
39 var tag = getTag(collection);
40 if (tag == mapTag || tag == setTag) {
41 return collection.size;
43 return baseKeys(collection).length;
46 module.exports = size;