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[no-unused-vars] false positive when a type is used in a generic position on a method in a class with emitDecoratorMetadata: true #2972

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@mlc-mlapis

Description

@mlc-mlapis
  • I have tried restarting my IDE, and the issue persists.
  • I have updated to the latest version of the packages.
  • I have read the FAQ and my problem is not listed.

The problem reported in #2947 has not been solved by #2943. It remains the same as before.

Repro

If AppState is imported:

import {AppState} from '@m-kbase/shared/general/states';

and later used only in a constructor, like:

constructor(
   private _store: Store<AppState>
) {}

then the warning appears in many places (in relation to the import {AppState} from '@m-kbase/shared/general/states'; line):

warning 'AppState' is defined but never used @typescript-eslint/no-unused-vars

Expected Result

The same result as with the previous version 4.13.0 or earlier, with no warnings.

Versions

package version
@typescript-eslint/eslint-plugin 4.14.1
@typescript-eslint/parser 4.14.1
TypeScript 4.1.3
ESLint 7.18.0
node 12.13.1

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    bugSomething isn't workingpackage: eslint-pluginIssues related to @typescript-eslint/eslint-plugin

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