Get "No unused variables" Error when import type definitions in TypeScript

[kiochan]

What version of standard?
12.0.1

What operating system, Node.js, and npm version?
OS: Mac OS X 10.14.5 18F132
Node.js version: v12.0.0
Yarn version: 1.16.0

What did you expect to happen?
I want format my typescript code use standard **/*.ts --fix and I run standard with @typescript-eslint/parser and @typescript-eslint/eslint-plugin .
It should be error free.

package.json

{
  "standard": {
      "parser": "@typescript-eslint/parser",
      "plugins": [
        "@typescript-eslint/eslint-plugin"
      ]
    }
}

types.ts

export type TypedObject<T> = {
    [key: string]: T
}

test.ts

import { TypedObject } from './types'
export const myObject: TypedObject<Date> = {}

What actually happened?
It caused an error below:

standard: Use JavaScript Standard Style (https://standardjs.com)
  ******/test.ts:1:10: 'TypedObject' is defined but never used.

[despian]

You can fix this per file by adding:

/* eslint no-unused-vars: "off" */
/* eslint @typescript-eslint/no-unused-vars: "error" */

Obviously, this isn't a great solution for projects with many .ts files.

I think #1283 address this and some other issues better.

[feross]

I'd like to have solve this in a future version of standard. In the meantime, you can use standardx:

1. npm install standardx
2. Rename the "standard" field in your package.json to "standardx"
3. Add a new "rules": [] section with the following rules:

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

Let's close this issue in favor of: #1283 (comment)