| 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. |
| golang.org/x/tools/internal/event | Package event provides a set of packages that cover the main concepts of telemetry in an implementation agnostic way. |
| golang.org/x/tools/internal/event/core | Package core provides support for event based telemetry. |
| golang.org/x/tools/internal/event/export | |
| golang.org/x/tools/internal/event/label | |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| testing | Package testing provides support for automated testing of Go packages. |