@typescript-eslint/eslint-plugin error: 'Route' is defined but never used (no-unused-vars)

问题

After eslint adds typescript check, there will be an error when the attribute variable in the class definition is Array.

---

this is my eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true
  },
  'extends': ['plugin:vue/essential', '@vue/standard'],
  rules: {},
  parserOptions: {
    parser: '@typescript-eslint/parser',
    project: "./tsconfig.json"
  },
  plugins: ['@typescript-eslint']
};

回答1:

Looking at the eslint repository on github, there have been lots of issues opened about the no-unused-vars rule. Here is some examples:

https://github.com/typescript-eslint/typescript-eslint/issues/45

https://github.com/typescript-eslint/typescript-eslint/issues/111

https://github.com/typescript-eslint/typescript-eslint/issues/171

It's an ongoing problem. Hopefully we can expect this to be resolved soon.

Edit: James Middleton has the correct answer. The @typescript-eslint scope now contains working linting rules. Disable no-unused-vars and enable it with "@typescript-eslint/no-unused-vars": "error"

回答2:

The solution is to disable the native no-unused-vars so that only the TS one is enabled. The former is likely to be enabled if you extend a config in ESLint. Add the rules below to your ESLint config.

"rules": {
  "no-unused-vars": "off",
  "@typescript-eslint/no-unused-vars": "error"
}

回答3:

The pictures added to my questions can not be browsed. In order to facilitate other people to help answer the questions, add a screenshot of my code in the form of answers.

import {Route} from '@/app/router/Route';

class YabRouter {
    public widthOutAuthRoutes: Route[] = [];
    public systemConfigRoutes: Route[] = [];
    public staticRoutes: Route[] = [];
    public dynamicRoutes: Route[] = [];

回答4:

If someone are still having the issue, I add "extends": ["eslint:recommended", "plugin:react/recommended"], on the .eslintrc.json file and the problem get solved.

来源：https://stackoverflow.com/questions/55280555/typescript-eslint-eslint-plugin-error-route-is-defined-but-never-used-no-un