`declarationDir` outputs extra `src` folder? -- need to set `rootDir` in tsconfig

[szimek]

What happens and why it is wrong

I'm rewriting my library (https://github.com/szimek/signature_pad) to TypeScript - this is the first time I'm working with this language. I've specified declarationDir: 'dist/types' in tsconfig.js and set useTsconfigDeclarationDir: true. However, after building the library, the declaration files end up in dist/types/src. Is it supposed to be like this? If not, how can I change it, so that they end up directly in dist/types?

Versions

• typescript: 2.7.2
• rollup: 0.56.5
• rollup-plugin-typescript2: 0.12.0

rollup.config.js

https://github.com/szimek/signature_pad/blob/typescript/rollup.config.js

tsconfig.json

https://github.com/szimek/signature_pad/blob/typescript/tsconfig.json

package.json

https://github.com/szimek/signature_pad/blob/typescript/package.json

[ezolenko]

Yeah, typescript mirrors your project structure considering project root to be location of tsconfig.json -- plugin uses unmodified d.ts path to write out declarations when useTsconfigDeclarationDir is used.

If you don't use useTsconfigDeclarationDir, declarations will be dumped together with rollup output.

Either way should work if you set correct types property in package.json, but neither is very clean in your case I guess...

[szimek]

@ezolenko Thanks!

If you don't use useTsconfigDeclarationDir, declarations will be dumped together with rollup output.

That's good enough ;) Or I'll just rename dist/src to dist/types after building everything...

[agilgur5]

typescript mirrors your project structure

You can set rootDir in your tsconfig.json to influence this behavior.
See #275 (comment) for more details.

That issue effectively duplicates this one, but has gotten a lot more activity

[wakaztahir]

Please reopen this issue