| encoding/binary | Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| google.golang.org/protobuf/encoding/protowire | Package protowire parses and formats the raw wire encoding. |
| google.golang.org/protobuf/internal/errors | Package errors implements functions to manipulate errors. |
| google.golang.org/protobuf/proto | Package proto provides functions operating on protocol buffer messages. |
| io | Package io provides basic interfaces to I/O primitives. |