| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| golang.org/x/text/cases | Package cases provides general and language-specific case mappers. |
| golang.org/x/text/language | Package language implements BCP 47 language tags and related functionality. |
| gopkg.in/yaml.v3 | Package yaml implements YAML support for the Go language. |
| html/template | Package template (html/template) implements data-driven templates for generating HTML output safe against code injection. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| regexp | Package regexp implements regular expression search. |
| sort | Package sort provides primitives for sorting slices and user-defined collections. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |