fix: unalias (#93)

internal/checkers/checker.go

@@ -29,8 +29,8 @@ func ExecuteChecker(c Checker, pass *analysis.Pass, call CallContext, cfg Config
 	nparams := params.Len() // variadic => nonzero
 	startIndex := nparams - 1
 
-	lastArg := params.At(nparams - 1)
-	if !isTypeVariadicEmptyInterface(lastArg.Type()) {
+	iface, ok := types.Unalias(params.At(startIndex).Type().(*types.Slice).Elem()).(*types.Interface)
+	if !ok || !iface.Empty() {
 		return // final (args) param is not ...interface{}
 	}
 

internal/checkers/filter.go

@@ -2,6 +2,7 @@ package checkers
 
 import (
 	"go/ast"
+	"go/types"
 
 	"golang.org/x/tools/go/analysis"
 )
@@ -13,13 +14,17 @@ func filterKeyAndValues(pass *analysis.Pass, keyAndValues []ast.Expr, objName st
 		// Skip any object type field we found
 		switch arg := arg.(type) {
 		case *ast.CallExpr, *ast.Ident:
-			typ := pass.TypesInfo.TypeOf(arg)
+			typ := types.Unalias(pass.TypesInfo.TypeOf(arg))
 
-			if typ, ok := typ.(commonAlias); ok {
+			switch typ := typ.(type) {
+			case *types.Named:
 				obj := typ.Obj()
 				if obj != nil && obj.Name() == objName {
 					continue
 				}
+
+			default:
+				// pass
 			}
 		}