| 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/token | Package token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates). |
| go/types | Package types declares the data types and implements the algorithms for type-checking of Go packages. |
| golang.org/x/tools/go/analysis | Package analysis defines the interface between a modular static analysis and an analysis driver program. |
| golang.org/x/tools/go/analysis/passes/inspect | Package inspect defines an Analyzer that provides an AST inspector (golang.org/x/tools/go/ast/inspector.Inspector) for the syntax trees of a package. |
| honnef.co/go/tools/analysis/code | Package code answers structural and type questions about Go code. |
| honnef.co/go/tools/analysis/edit | Package edit contains helpers for creating suggested fixes. |
| honnef.co/go/tools/analysis/facts | |
| honnef.co/go/tools/analysis/lint | Package lint provides abstractions on top of go/analysis. |
| honnef.co/go/tools/analysis/report | |
| honnef.co/go/tools/go/ast/astutil | |
| honnef.co/go/tools/go/types/typeutil | |
| honnef.co/go/tools/internal/sharedcheck | |
| honnef.co/go/tools/pattern | Package pattern implements a simple language for pattern matching Go ASTs. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |