$type:

Estimated reading time: 1 minute

`$type:`

type	Number	alias
Double	1	“double”
String	2	“string”
Object	3	“object”
Array	4	“array”
Binary data	5	“binData”
Undefined	6	“undefined” Deprecated.
ObjectId	7	“objectId”
Boolean	8	“bool”
Date	9	“date”
Null	10	“null”
Regular Expression	11	“regex”
DBPointer	12	“dbPointer” Deprecated.
JavaScript	13	“javascript”
Symbol	14	“symbol” Deprecated.
JavaScript (with scope)	15	“javascriptWithScope”
32-bit integer	16	“int”
Timestamp	17	“timestamp”
64-bit integer	18	“long”
Decimal128	19	“decimal” New in version 3.4.
Min key	-1	“minKey”
Max key	127	“maxKey”