Problem about the weird presentation of circular imports

I'm currently curious about the warning texts problem , which I'm not sure whether original feature design or not. The situation code could clone from the commit: https://github.com/chigix/mandoc/tree/8fb20574682c5335ff90eea4761c82d1a4021dfe

after clone and checkout to commit: 8fb20574682c5335ff90eea4761c82d1a4021dfe, run:

npm install
npm run ts-lint

> tslint -c tslint.json --project tsconfig/tsconfig.base.json "src/**/*.ts"

no-unused-variable is deprecated. Since TypeScript 2.9. Please use the built-in compiler checks instead.

ERROR: C:/Users/chigi/Projects/mandoc/src/bin/mandoc.ts[17, 1]: circular import detected: mandoc.ts -> template.config.ts -> template.stream.ts -> template.helper.ts -> mandoc.ts
ERROR: C:/Users/chigi/Projects/mandoc/src/index.ts[1, 1]: circular import detected: index.ts -> template.stream.ts -> template.helper.ts -> index.ts
....

The problem is about the circulation result. Take the first error for instance, the real circulation should be:

mandoc.ts -> template.config.ts -> template.stream.ts -> template.helper.ts -> template.stream.ts

rather than:

mandoc.ts -> template.config.ts -> template.stream.ts -> template.helper.ts -> mandoc.ts

, which made me confused initially because I could not find any import from mandoc.ts in template.helper.ts, as warned.

Although it is not a fatal error, I still want to ask and confirm the original design.