chore: fix some typo

engine/disk.go

@@ -2,6 +2,7 @@ package engine
 
 import (
 	"fmt"
+	"log"
 	"os"
 	"path/filepath"
 )
@@ -9,14 +10,11 @@ import (
 // GetFilesFromDir walks through a directory and returns
 // file paths contained inside.
 func GetFilesFromDir(dir string) (files []string) {
-	// is dir?
-	// is readable/exists?
-	filepath.Walk(dir, func(fp string, fi os.FileInfo, err error) error {
+	err := filepath.Walk(dir, func(fp string, fi os.FileInfo, err error) error {
 		if err != nil {
 			fmt.Println(err)
 			return nil
 		}
-		fi.Mode()
 		if fi.IsDir() {
 			return nil
 		}
@@ -26,5 +24,9 @@ func GetFilesFromDir(dir string) (files []string) {
 		return nil
 	})
 
-	return
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return files
 }

engine/results.go

@@ -9,7 +9,7 @@ import (
 const tabPadding = 3
 const tabPaddingChar = ' '
 
-// QueryResult ...
+// QueryResult defines the structure of a query result
 type QueryResult struct {
 	File       string
 	Count      float64