flag | Package flag implements command-line flag parsing. |
fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
go/ast | Package ast declares the types used to represent syntax trees for Go packages. |
go/format | Package format implements standard formatting of Go source. |
go/parser | Package parser implements a parser for Go source files. |
go/token | Package token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates). |
honnef.co/go/tools/pattern | Package pattern implements a simple language for pattern matching Go ASTs. |
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. |
reflect | Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |