refactor: replace os.IsNotExist() with errors.Is()

Author: buchdag

internal/template/template.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 	"log"
 	"net/url"
 	"os"
@@ -191,7 +192,7 @@ func GenerateFile(config config.Config, containers context.Context) bool {
 
 	if config.Dest != "" {
 		oldContents, err := os.ReadFile(config.Dest)
-		if err != nil && !os.IsNotExist(err) {
+		if err != nil && !errors.Is(err, fs.ErrNotExist) {
 			log.Fatalf("Unable to compare current file contents: %s: %s\n", config.Dest, err)
 		}
 

internal/utils/utils.go

@@ -1,6 +1,8 @@
 package utils
 
 import (
+	"errors"
+	"io/fs"
 	"os"
 	"strings"
 )
@@ -27,7 +29,7 @@ func PathExists(path string) (bool, error) {
 	if err == nil {
 		return true, nil
 	}
-	if os.IsNotExist(err) {
+	if errors.Is(err, fs.ErrNotExist) {
 		return false, nil
 	}
 	return false, err