declarationDir compiler option fails generation

[igorpupkinable]

I am trying to bundle type definitions, but get the following error TS6053: File 'src/index.d.ts' not found.
I run yarn dts-bundle-generator --external-imports=react --out-file lib/index.d.ts src/index.ts and it fails with this error.

My src/index.ts is just a simple import of reusable React components:

export {
  Body,
  Headline,
} from './Text';

src/Text/index.ts content is

export { default as Body } from './Body';
export { default as Headline } from './Headline';

src/Text/Body.tsx content is similar in both files:

import React, {
  FC,
} from 'react';
import classNames from 'classnames';

import { TextProps } from './TextProps';

import styles from './Text.css';

const Body: FC<TextProps> = ({
  ...
}) => (
  <span ... />
);

export default Body;

Why does it need src/index.d.ts at all?
I works fine if I run tsc to generate definition file for each ts/tsx file and use dts-bundle-generator later with
yarn dts-bundle-generator --external-imports=react --out-file lib/index.d.ts lib/src/index.d.ts

[timocov]

Why does it need src/index.d.ts at all?

That's because the tool firstly compiles all sources to declaration files (in-memory) and then create a program for declaration files - this is how the tool works actually.

Also, what version of the tool you use? It seems that the issue is related to "outDir" folder (I noticed that source code is in src folder, but output for it is lib/src) but the tool removes outDir compiler option since v3.2.0. Do you use composite projects?

Is it possible to create a repro for that please? With tsconfig and all needed sources (I don't need all of them, just for a minimal repro). I think it might help much to solve the issue.

[igorpupkinable]

Thank you for the reply.

Indeed, I use composite project, but it should not affect the matter, because bundle generator is executed within the package itself.
Please find a cut down repo here.

It works if I generate type definitions upfront with yarn test:types and then build with yarn build.
You will see an output in packages/ui-core/lib/

However, it does not work if yarn build from scratch with filePath: './src/index.ts', in DTS config.

[timocov]

The reason is declarationDir compiler option. This is a bug, I'll fix it shortly. Thanks for reporting!

[timocov]

The fix is just published with 5.7.0 version.

[igorpupkinable]

It works. Thank you for fixing.