| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| golang.org/x/telemetry/internal/configstore | Package configstore abstracts interaction with the telemetry config server. |
| golang.org/x/telemetry/internal/proxy | Package proxy provides functions for writing module data to a directory in proxy format, so that it can be used as a module proxy by setting GOPROXY="file://<dir>". |
| golang.org/x/telemetry/internal/telemetry | Package telemetry manages the telemetry mode file. |
| os/exec | Package exec runs external commands. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| testing | Package testing provides support for automated testing of Go packages. |