pkg -> internal, analyzer via constructor

main.go

@@ -3,9 +3,9 @@ package main
 import (
 	"golang.org/x/tools/go/analysis/singlechecker"
 
-	"github.com/Antonboom/errname/internal/analyzer"
+	"github.com/Antonboom/errname/pkg/analyzer"
 )
 
 func main() {
-	singlechecker.Main(analyzer.ErrName)
+	singlechecker.Main(analyzer.New())
 }

internal/analyzer/analyzer.go → pkg/analyzer/analyzer.go

@@ -12,12 +12,14 @@ import (
 	"golang.org/x/tools/go/ast/inspector"
 )
 
-// ErrName is the analyzer itself.
-var ErrName = &analysis.Analyzer{
-	Name:     "errname",
-	Doc:      "Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.",
-	Run:      run,
-	Requires: []*analysis.Analyzer{inspect.Analyzer},
+// New returns new errname analyzer.
+func New() *analysis.Analyzer {
+	return &analysis.Analyzer{
+		Name:     "errname",
+		Doc:      "Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.",
+		Run:      run,
+		Requires: []*analysis.Analyzer{inspect.Analyzer},
+	}
 }
 
 type stringSet = map[string]struct{}

internal/analyzer/analyzer_test.go → pkg/analyzer/analyzer_test.go

@@ -12,7 +12,7 @@ func TestErrName(t *testing.T) {
 		"unusual/errortype",
 		"unusual/newfunc",
 	}
-	analysistest.Run(t, analysistest.TestData(), ErrName, pkgs...)
+	analysistest.Run(t, analysistest.TestData(), New(), pkgs...)
 }
 
 func Test_getPkgFromPath(t *testing.T) {