fix(file): replaced backslash in path output of generate images API res

Image save path in generateImages API result includes backslash on Windows. We need to replace
backslashes with slashes for the path output.

fix #64

src/helpers/file.ts

@@ -31,6 +31,10 @@ const isHtmlFile = (file: string): boolean => {
   return ['html', 'htm'].includes(getExtension(file));
 };
 
+const convertBackslashPathToSlashPath = (backSlashPath: string): string => {
+  return slash(backSlashPath);
+};
+
 const getAppDir = (): string => {
   let appPath;
   try {
@@ -50,7 +54,9 @@ const getImageSavePath = (
   outputFolder: string,
   ext: Extension,
 ): string => {
-  return path.join(outputFolder, `${imageName}.${ext}`);
+  return convertBackslashPathToSlashPath(
+    path.join(outputFolder, `${imageName}.${ext}`),
+  );
 };
 
 const fileUrl = (filePath: string): string => {
@@ -142,10 +148,6 @@ const writeFile = (filePath: string, data: string): Promise<void> => {
   });
 };
 
-const convertBackslashPathToSlashPath = (backSlashPath: string): string => {
-  return slash(backSlashPath);
-};
-
 const getRelativeImagePath = (
   outputFilePath: string,
   imagePath: string,