feat(files): expand file editor to support more formats, add docx/xlsx preview

apps/sim/app/api/files/upload/route.test.ts

@@ -458,10 +458,10 @@ describe('File Upload Security Tests', () => {
       expect(response.status).toBe(200)
     })
 
-    it('should reject JavaScript files', async () => {
+    it('should reject unsupported file types', async () => {
       const formData = new FormData()
-      const maliciousJs = 'alert("XSS")'
-      const file = new File([maliciousJs], 'malicious.js', { type: 'application/javascript' })
+      const content = 'binary data'
+      const file = new File([content], 'archive.exe', { type: 'application/octet-stream' })
       formData.append('file', file)
       formData.append('context', 'workspace')
       formData.append('workspaceId', 'test-workspace-id')
@@ -475,7 +475,7 @@ describe('File Upload Security Tests', () => {
 
       expect(response.status).toBe(400)
       const data = await response.json()
-      expect(data.message).toContain("File type 'js' is not allowed")
+      expect(data.message).toContain("File type 'exe' is not allowed")
     })
 
     it('should reject files without extensions', async () => {

apps/sim/app/api/files/upload/route.ts

@@ -8,6 +8,7 @@ import { generateWorkspaceFileKey } from '@/lib/uploads/contexts/workspace/works
 import { isImageFileType } from '@/lib/uploads/utils/file-utils'
 import {
   SUPPORTED_AUDIO_EXTENSIONS,
+  SUPPORTED_CODE_EXTENSIONS,
   SUPPORTED_DOCUMENT_EXTENSIONS,
   SUPPORTED_VIDEO_EXTENSIONS,
   validateFileType,
@@ -23,6 +24,7 @@ const IMAGE_EXTENSIONS = ['png', 'jpg', 'jpeg', 'gif', 'webp', 'svg'] as const
 
 const ALLOWED_EXTENSIONS = new Set<string>([
   ...SUPPORTED_DOCUMENT_EXTENSIONS,
+  ...SUPPORTED_CODE_EXTENSIONS,
   ...IMAGE_EXTENSIONS,
   ...SUPPORTED_AUDIO_EXTENSIONS,
   ...SUPPORTED_VIDEO_EXTENSIONS,