Consider:
---
$ cat module-info.java
import module m;

module m {
    exports test;
    uses Api;
}
---

---
$ cat test/Api.java
package test;

public class Api {
}
---

Compiling this yields:
---
$ javac --enable-preview --source 23 module-info.java test/Api.java
module-info.java:1: error: module m does not read: m
import module m;
^
module-info.java:5: error: cannot find symbol
    uses Api;
         ^
  symbol: class Api
Note: module-info.java uses preview features of Java SE 23.
Note: Recompile with -Xlint:preview for details.
2 errors
---

Which is wrong, as each module reads itself.