| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/gogo/protobuf/gogoproto | Package gogoproto provides extensions for protocol buffers to achieve: |
| github.com/gogo/protobuf/jsonpb | Package jsonpb provides marshaling and unmarshaling between protocol buffers and JSON. |
| github.com/gogo/protobuf/proto | Package proto converts data structures to and from the wire format of protocol buffers. |
| github.com/gogo/protobuf/types | Package types contains code for interacting with well-known types. |
| io | Package io provides basic interfaces to I/O primitives. |
| math | Package math provides basic constants and mathematical functions. |
| time | Package time provides functionality for measuring and displaying time. |