1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40

import { readdir } from "node:fs/promises";

interface Entry {
  url: URL;

  name: string;
}

export async function listEntries(
  dir: URL,
  root: URL = dir,
): Promise<readonly Entry[]> {
  const entries = await readdir(dir, {
    withFileTypes: true,
  });

  return Promise.all(
    entries.map(async (entry) => {
      if (entry.isDirectory()) {
        return listEntries(new URL(entry.name + "/", dir), root);
      }

      if (!entry.isFile()) {
        return [];
      }

      const url = new URL(entry.name, dir);
      if (url.pathname.indexOf(root.pathname) !== 0) {
        throw new Error("Document outside docs root dir: " + url.pathname);
      }

      return [
        {
          url,
          name: url.pathname.slice(root.pathname.length).replace(/\.md$/, ""),
        },
      ];
    }),
  ).then((arr) => arr.flat());
}