| compress/zlib | Package zlib implements reading and writing of zlib format compressed data, as specified in RFC 1950. |
| flag | Package flag implements command-line flag parsing. |
| github.com/rs/zerolog | Package zerolog provides a lightweight logging library dedicated to JSON logging. |
| io | Package io provides basic interfaces to I/O primitives. |
| log | Package log implements a simple logging package. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| time | Package time provides functionality for measuring and displaying time. |