| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| io | Package io provides basic interfaces to I/O primitives. |
| log/slog | Package slog provides structured logging, in which log records include a message, a severity level, and various other attributes expressed as key-value pairs. |
| maps | Package maps defines various functions useful with maps of any type. |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| slices | Package slices defines various functions useful with slices of any type. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync/atomic | Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms. |
| unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |