| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| go.mongodb.org/mongo-driver/bson/bsonrw | Package bsonrw contains abstractions for reading and writing BSON and BSON like types from sources. |
| go.mongodb.org/mongo-driver/bson/bsontype | Package bsontype is a utility package that contains types for each BSON type and the a stringifier for the Type to enable easier debugging when working with BSON. |
| go.mongodb.org/mongo-driver/bson/primitive | Package primitive contains types similar to Go primitives for BSON types that do not have direct Go primitive representations. |
| go.mongodb.org/mongo-driver/x/bsonx/bsoncore | Package bsoncore is intended for internal use only. |
| math | Package math provides basic constants and mathematical functions. |
| net/url | Package url parses URLs and implements query escaping. |
| reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |