| errors | Package errors implements functions to manipulate errors. |
| internal/bytealg | |
| internal/byteorder | Package byteorder provides functions for decoding and encoding little and big endian integer types from/to byte slices. |
| internal/goarch | package goarch contains GOARCH-specific constants. |
| internal/itoa | |
| internal/oserror | Package oserror defines errors values used in the os package. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| syscall/js | Package js gives access to the WebAssembly host environment when using the js/wasm architecture. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |