format

type Options struct {
	// LangVersion is the Go version a piece of code is written in.
	// The version is used to decide whether to apply formatting
	// rules which require new language features.
	// When empty, a default of go1 is assumed.
	// Otherwise, the version must satisfy [go/version.IsValid].
	//
	// When formatting a Go module, LangVersion should typically be
	//
	//     go list -m -f {{.GoVersion}}
	//
	// with a "go" prefix, or the equivalent from `go mod edit -json`.
	LangVersion string

	// ModulePath corresponds to the Go module path which contains the source
	// code being formatted. When formatting a Go module, ModulePath should be
	//
	//     go list -m -f {{.Path}}
	//
	// or the equivalent from `go mod edit -json`.
	//
	// ModulePath is used for formatting decisions like what import paths are
	// considered to be not part of the standard library. When empty, the source
	// is formatted as if it weren't inside a module.
	ModulePath string

	// ExtraRules enables extra formatting rules, such as grouping function
	// parameters with repeated types together.
	ExtraRules bool
}