(svelte-check) npm run build failed in svelte-check

[takurinton]

There was 1 error inside the catch block when building svelte-check.
I used a branch by instanceof and avoided it.

npm run build 

... 

src/index.ts:95:24 - error TS2345: Argument of type 'unknown' is not assignable to parameter of type 'Error'.

95         writer.failure(err);
                          ~~~

Found 1 error.

[jasonlyu123]

We haven't updated to typescript 4.4 yet. And this error is probably from typescript 4.4's new useUnknownInCatchVariables flag. There should still be multiple places where this error might happen in the codebase. I think we prefer dealing with it together after the update. It's currently blocked by an upstream issue.

[dummdidumm]

This is somewhat of a subset of #1158 which will handle this in one go after TS releases it's patch. Therefore closing this as a duplicate. Still thanks for your contribution!