Val Town Code SearchReturn to Val Town

362  
363  try {
364    // Fetch the source code
365    const response = await fetch(sourceUrl);
366    if (!response.ok) {
367      return c.text(`Failed to fetch source: ${response.status}`, 404);
368    }
369    
611        async function detectBlock(code, line, column) {
612            if (blockDetectorUrl) {
613                const response = await fetch(blockDetectorUrl, {
614                    method: 'POST',
615                    headers: { 'Content-Type': 'application/json' },
624        async function explainBlock(code, blockInfo) {
625            if (blockExplainerUrl) {
626                const response = await fetch(blockExplainerUrl, {
627                    method: 'POST',
628                    headers: { 'Content-Type': 'application/json' },
770}
771
772export default app.fetch;

39```
40
41This will fetch the source from `https://esm.town/v/nbbaier/sqliteExplorerApp@100-main/main.tsx` and display it with annotations.
42
43### Custom Functions
136
1371. **URL Parsing**: Extracts the val path from the URL
1382. **Source Fetching**: Fetches source code from `https://esm.town/v/{path}`
1393. **Language Detection**: Determines language from file extension
1404. **Syntax Highlighting**: Applies syntax highlighting using Prism.js
155## Error Handling
156
157- Returns 404 if the source URL cannot be fetched
158- Returns 400 for invalid path formats
159- Returns 500 for other errors with error messages