| bytes | Package bytes implements functions for the manipulation of byte slices. |
| 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/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. |
| golang.org/x/tools/go/ast/astutil | Package astutil contains common utilities for working with the Go AST. |
| golang.org/x/tools/internal/analysisinternal | Package analysisinternal provides gopls' internal analyses with a number of helper functions that operate on typed syntax trees. |
| golang.org/x/tools/internal/typesinternal | Package typesinternal provides access to internal go/types APIs that are not yet exported. |
| 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. |