--------------
// Int8Array
'{"0":1,"1":2,"2":3}'
[object Int8Array]
Int8Array
--------------
// Symbol
undefined
[object Symbol]
Symbol
--------------
// Map
'{}'
[object Map]
Map
--------------
// Set
'{}'
[object Set]
Set
--------------
// RegExp
'{}'
[object RegExp]
RegExp
--------------
// Date
'"2018-12-26T07:26:30.486Z"'
[object Date]
Date
--------------
// NaN
'null'
[object Number]
Number
--------------
// Infinity
'null'
[object Number]
Number
--------------
// null
'null'
[object Null]
Null
--------------
// undefined
undefined
[object Undefined]
Undefined
--------------
// {}
'{}'
[object Object]
Object
