search

microsoft / tsdoc

A doc comment standard for TypeScript
https://tsdoc.org/
MIT License
4.67k stars 131 forks source link

`eslint-plugin-tsdoc`: Rule to mark types referenced through `{@link}` and `{@inheritDoc}` as used #348

Open kraenhansen opened 1 year ago

kraenhansen commented 1 year ago

When writing tsdoc strings, it's powerful to be able to reference types from an inline link tag. It would however be great if the eslint plugin would mark these as used and avoid the @typescript-eslint/no-unused-vars rule reporting types that are only referenced from tsdoc comments as unused.

As an example, the following code

class MyClass {}
/** This comment reference {@link MyClass} but it's still "never used" */
const foo = null;

yields

  1:7  warning  'MyClass' is defined but never used       @typescript-eslint/no-unused-vars
  3:7  warning  'foo' is assigned a value but never used  @typescript-eslint/no-unused-vars

and I would love for that first line to go away.

This is already supported for plain (non inline tags) by the jsdoc plugin, through the use of the eslint SourceCode#markVariableAsUsed API, but it doesn't yet support inline tags and it would be great to have this supported in the eslint-plugin-tsdoc directly.

I'd be interested in submitting a PR for this, if this is interesting for the maintainers.

cowwoc commented 12 months ago

For what it's worth, I'm also constantly tripping across this issue.

@octogonz can we have your blessing for @kraenhansen to submit a PR?

octogonz commented 12 months ago

Sure, sounds good to me. 🙂 I am on vacation this week but will have more time to investigate this next week.

octogonz commented 12 months ago

Just to clarify, the PR would probably be for the typescript-eslint project, not eslint-plugin-tsdoc, right?

kraenhansen commented 12 months ago

I'm on vacation these days too and probably won't be looking into this for the next two weeks.

PR would probably be for the typescript-eslint project, not eslint-plugin-tsdoc, right

I'm not deeply familiar with the architecture of this project, but when I did similar work for the jsdoc plugin, it was valuable to implement this as a rule as it was responsible for parsing docs comments. It also seemed to make it easier for end-users to enable / disable and configure.

cowwoc commented 1 month ago

@kraenhansen any progress on this issue?