diff --git a/types/index.d.ts b/types/index.d.ts
index 3581a68..140e4df 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -48,5 +48,5 @@ export declare type OdSearchResult = Array<{
   file?: OdFileObject
   folder?: OdFolderObject
   path: string
-  parentReference: { id: string; name: string; path?: string }
+  parentReference: { id: string; name: string; path: string }
 }>
diff --git a/utils/getFileIcon.ts b/utils/getFileIcon.ts
index f2ab78a..9027486 100644
--- a/utils/getFileIcon.ts
+++ b/utils/getFileIcon.ts
@@ -98,6 +98,8 @@ export function getFileIcon(fileName: string, flags?: { video?: boolean }): [Ico
   const extension = getExtension(fileName)
   let icon = hasKey(extensions, extension) ? extensions[extension] : icons.file
 
+  // Files with '.ts' extensions may be TypeScript files or TS Video files, we check for the flag 'video'
+  // to determine which icon to render for '.ts' files.
   if (extension === 'ts') {
     if (flags?.video) {
       icon = icons.video
diff --git a/utils/getPreviewType.ts b/utils/getPreviewType.ts
index 5395ead..b8d6a31 100644
--- a/utils/getPreviewType.ts
+++ b/utils/getPreviewType.ts
@@ -1,4 +1,4 @@
-const preview = {
+export const preview = {
   markdown: 'markdown',
   image: 'image',
   text: 'text',
@@ -11,7 +11,7 @@ const preview = {
   url: 'url',
 }
 
-const extensions = {
+export const extensions = {
   gif: preview.image,
   jpeg: preview.image,
   jpg: preview.image,
@@ -34,13 +34,17 @@ const extensions = {
   c: preview.code,
   cpp: preview.code,
   js: preview.code,
+  jsx: preview.code,
   java: preview.code,
   sh: preview.code,
   cs: preview.code,
   py: preview.code,
   css: preview.code,
   html: preview.code,
+  // typescript or video file, determined below
   ts: preview.code,
+  tsx: preview.code,
+  rs: preview.code,
   vue: preview.code,
   json: preview.code,
   yaml: preview.code,
@@ -70,14 +74,14 @@ const extensions = {
   url: preview.url,
 }
 
-export { preview }
-
 export function getPreviewType(extension: string, flags?: { video?: boolean }): string | undefined {
   let previewType = extensions[extension]
   if (!previewType) {
     return previewType
   }
 
+  // Files with '.ts' extensions may be TypeScript files or TS Video files, we check for the flag 'video'
+  // to determine what preview renderer to use for '.ts' files.
   if (extension === 'ts') {
     if (flags?.video) {
       previewType = preview.video