Error when incremental option is true

[hagevvashi]

problem

when setting "incremental" filed (in tsconfig.json) to true, test fails and an error occurred.

reproduction

clone this repo and execute npm ci && npm test , you'll get below error message.

https://github.com/hagevvashi/dts-jest-sandbox

Test suite failed to run

Debug Failure. False expression: position cannot precede the beginnig of the file

>    import { add } from "./index";