# Fix: URL Encoding Bug & Code Refactor
## Issue
**Bug**: URLs with encoded characters (e.g., `%20` for spaces) were
being double-encoded or incorrectly processed in
[lowercaseUrlOriginAndRemoveTrailingSlash](cci:1://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/lowercaseUrlOriginAndRemoveTrailingSlash.ts:4:0-16:2),
causing URL mismatches and potential data integrity issues.
**Build Error**: `TS2307: Cannot find module
'src/modules/messaging/message-import-manager/drivers/imap/utils/safe-decode-uri-component.util'`
## Root Cause Analysis
### 1. Missing URL Decoding
The
[lowercaseUrlOriginAndRemoveTrailingSlash](cci:1://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/lowercaseUrlOriginAndRemoveTrailingSlash.ts:4:0-16:2)
function was processing URLs without properly decoding URI components.
When URLs contained encoded characters like `%20`, `%2F`, etc., they
weren't being normalized correctly.
### 2. Invalid Cross-Package Import
The fix attempted to import
[safeDecodeURIComponent](cci:1://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/safeDecodeURIComponent.ts:0:0-6:2)
from `twenty-server`:
```typescript
import { safeDecodeURIComponent } from 'src/modules/messaging/message-import-manager/drivers/imap/utils/safe-decode-uri-component.util';
```
This failed because:
- The file resides in `twenty-shared`, a separate package
- TypeScript cannot resolve internal paths from another package
- The monorepo uses package exports (`twenty-shared/utils`) for
cross-package imports, not direct file paths
## Solution
### 1. Bug Fix: Added Safe URI Decoding
Updated
[lowercaseUrlOriginAndRemoveTrailingSlash.ts](cci:7://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/lowercaseUrlOriginAndRemoveTrailingSlash.ts:0:0-0:0)
to properly decode URL components:
```typescript
export const lowercaseUrlOriginAndRemoveTrailingSlash = (rawUrl: string) => {
const url = getURLSafely(rawUrl);
if (!isDefined(url)) {
return rawUrl;
}
const lowercaseOrigin = url.origin.toLowerCase();
const path =
safeDecodeURIComponent(url.pathname) +
safeDecodeURIComponent(url.search) +
url.hash;
return (lowercaseOrigin + path).replace(/\/$/, '');
};
```
The
[safeDecodeURIComponent](cci:1://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/safeDecodeURIComponent.ts:0:0-6:2)
wrapper handles malformed URI sequences gracefully by returning the
original string if decoding fails, preventing runtime crashes.
### 2. Refactor: Consolidated Shared Utility
**Before**: Duplicate utility existed in `twenty-server`
```
twenty-server/src/modules/messaging/.../utils/safe-decode-uri-component.util.ts
```
**After**: Single source of truth in `twenty-shared`
```
twenty-shared/src/utils/url/safeDecodeURIComponent.ts
```
This follows the established pattern in the codebase where shared
utilities live in `twenty-shared` and are imported via subpath exports:
```typescript
// In twenty-server
import { safeDecodeURIComponent } from 'twenty-shared/utils';
// In twenty-shared (local import)
import { safeDecodeURIComponent } from './safeDecodeURIComponent';
```
## Files Changed
| File | Action | Description |
|------|--------|-------------|
|
[twenty-shared/src/utils/url/safeDecodeURIComponent.ts](cci:7://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/safeDecodeURIComponent.ts:0:0-0:0)
| **Created** | New shared utility (moved from twenty-server) |
|
[twenty-shared/src/utils/url/index.ts](cci:7://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/index.ts:0:0-0:0)
| **Modified** | Added export for
[safeDecodeURIComponent](cci:1://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/safeDecodeURIComponent.ts:0:0-6:2)
|
|
[twenty-shared/src/utils/url/lowercaseUrlOriginAndRemoveTrailingSlash.ts](cci:7://file:///Users/apple/WebstormProjects/twenty/packages/twenty-shared/src/utils/url/lowercaseUrlOriginAndRemoveTrailingSlash.ts:0:0-0:0)
| **Modified** | Fixed import path, now uses local relative import |
| `twenty-server/.../imap-message-text-extractor.service.ts` |
**Modified** | Updated import to use `twenty-shared/utils` |
| `twenty-server/.../safe-decode-uri-component.util.ts` | **Deleted** |
Removed duplicate utility |
## The Utility
```typescript
// safeDecodeURIComponent.ts
export const safeDecodeURIComponent = (text: string): string => {
try {
return decodeURIComponent(text);
} catch {
return text;
}
};
```
This wrapper is necessary because `decodeURIComponent()` throws a
`URIError` on malformed sequences (e.g., `%E0%A4%A`). The safe version
returns the original string instead of crashing.
## Testing
- **342 tests passed** in `twenty-shared`
- `lowercaseUrlOriginAndRemoveTrailingSlash.test.ts` validates URL
normalization behavior
- No regressions in existing functionality
## Impact
- **Bug Fixed**: URLs with encoded characters are now properly
normalized
- **Code Quality**: Eliminated code duplication between packages
- **Maintainability**: Single source of truth for URI decoding utility
- **Build**: Resolved TS2307 compilation error
---------
Co-authored-by: Joker <apple@Apples-MacBook-Pro.local>
