Cycles:

1. a.ts imports default from sub/index.ts which imports a.ts
2. sub/index.ts imports default from a.ts which imports sub/index.ts
3. sub/c.ts imports e from sub/d.ts which imports sub/c.ts
4. sub/d.ts imports c from sub/c.ts which imports sub/d.ts
5. sub/c.ts imports f from sub/sub/f.ts which imports sub/index.ts which imports sub/c.ts
6. sub/sub/f.ts imports d from sub/index.ts which imports sub/c.ts which imports sub/sub/f.ts
7. sub/index.ts imports c from sub/c.ts which imports sub/sub/f.ts which imports /sub/index.ts