Fix golint warnings

internal/localcheck/arch.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 )
 
+// Architectures represents all supported architecture of an app
 type Architectures struct {
 	Intel   uint
 	Arm     uint

internal/localcheck/local.go

@@ -103,10 +103,10 @@ func getInterpreterPath(filename string) (path string, ok bool) {
 			return "", false
 		}
 
-		return path, true
-	} else {
-		path := strings.SplitN(line, " ", 2)[0]
-
 		return path, true
 	}
+
+	path = strings.SplitN(line, " ", 2)[0]
+
+	return path, true
 }

internal/macapp/macapp.go

@@ -27,6 +27,7 @@ func init() {
 	}
 }
 
+// Application represents an installed app
 type Application struct {
 	// Name shows the app name
 	Name string

internal/remotecheck/remote.go

@@ -16,6 +16,7 @@ var (
 	infoCache map[string]AppInfo = make(map[string]AppInfo)
 )
 
+// AppInfo represents the basic information of an app obtained from remote sources
 type AppInfo struct {
 	Website    string
 	ArmSupport Support
@@ -48,6 +49,7 @@ func Init() error {
 	return nil
 }
 
+// GetInfo returns the info of an app from remote sources
 func GetInfo(name string) (AppInfo, error) {
 	if info, ok := infoCache[name]; ok {
 		return info, nil

internal/remotecheck/support.go

@@ -1,16 +1,24 @@
 package remotecheck
 
+// Support represents the Arm support status of an app
 type Support uint
 
 const (
+	// SupportUndefined is the zero value of Support type
 	SupportUndefined Support = iota // zero value
+	// SupportNative means an app have native Apple Silicon support
 	SupportNative
+	// SupportTransition means an app is supported vis Rosetta 2 or Virtual Environment
 	SupportTransition
+	// SupportInDevelopment means an app does not support Apple Silicon yet but the support is in development
 	SupportInDevelopment
+	// SupportInDevelopment means an app does not support Apple Silicon
 	SupportNotYet
+	// SupportUnknown means it's not known if an app supports Apple Silicon
 	SupportUnknown
 )
 
+// Parse parses support information from string.
 func (s *Support) Parse(str string) Support {
 	switch str {
 	case "✅":