为什么ESLint为TypeScript接口抛出“ no-unused-vars”？ [英] Why ESLint throws 'no-unused-vars' for TypeScript interface?

问题描述

所以，我在.ts文件中有这段代码：

So, I have this piece of code in .ts file:

import {MicroEventInterface} from '../Interfaces';

export default class MicroEvent implements MicroEventInterface {

// code

ESLint会引发此错误：

And ESLint throws this error:

I在ESLint中具有TypeScript的配置：

I have this config for TypeScript in ESLint:

typescript: {
    extends: [
        'plugin:@private/private/react' // private rep with React config
    ],
    parser: '@typescript-eslint/parser',
    plugins: [
        '@typescript-eslint',
        'import'
    ],
    settings: {
        'import/resolver': {
            'node': {
                'extensions': [
                    '.js',
                    '.jsx',
                    '.ts',
                    '.tsx'
                ],
                'moduleDirectory': [
                    'node_modules/',
                    'src/'
                ]
            }
        },
        react: {
            createClass: 'createClass',
            pragma: 'React',
            version: '0.14.9'
        }
    }
}

所以，一切似乎都很好，但是我无法克服这个错误。

So, everything seems like fine, but I can't conquer this error.

有什么建议吗？

谢谢！

UPD：

看起来好像我 console.log（ --- ，MicroEventInterface）; 错误消失了。我认为，ESLint不会将实现视为实际用法。

Looks like if I console.log( --- , MicroEventInterface); error disappears. I think, ESLint does not treat implements as actual usage.

推荐答案

我认为解决此问题的正确方法是声明您的接口。

I believe that the correct way of solving this issue is to declare your interface.

declare interface Foo {}

以及其他类型，例如Foo.d.ts

in a separate file along with other types for example Foo.d.ts

然后正确配置您的打字稿编译器以提取所有声明。

And after that correctly configure your typescript compiler to pickup all of the declarations.

请参阅： https://www.typescriptlang.org/docs/handbook/tsconfig-json.html

部分： @ types，typeRoots和类型

之后，您将可以使用所有类型声明和没有显式导入的接口。

After that you will be able to use all of your type declarations and interfaces without explicit import.

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