Extending tsconfig does not work

[phil-tutti]

Having a tsconfig.prod.json looking like

{
  "extends": "./tsconfig.json",
  "include": ["src/**/*"],
  "exclude": ["**/*.test.ts*", "**/*/mocks.ts", "node_modules", "testing", "**/*.stories.tsx"]
}

does not seem to work with at least the alias plugin. My tsconfig.json has compileOptions.paths defined, and it works correctly when I target tsconfig.json directly. However, using the above extends property, compilerOptions.paths do not seem to be picked up.

Edit: this library could be used to load the config properly

[aymericzip]

Hi @phil-tutti,

Thank you for reporting this issue and for your contribution!

Would you be able to provide a repository where I can reproduce the issue? I’ll test your PR in the coming days

Feel free to invite me to clone your project repository

[aymericzip]

@phil-tutti

PR merged. Thanks! Changes have been added in v1.0.19

[phil-tutti]

Hey @aymericzip , thank you for merging. Regarding a reproduction repository: You can easily test it in one of your project that uses tsup. Just create a tsconfig.build.json with the following content

{
   "extends": "./tsconfig.json"
}

add it as tsconfig to the tsup config and, while having paths in tsconfig.json, you'll see that they weren't picked up

Edit: Please let me know if it worked. If not, I'll create a reproduction repo for you