Missing type file causing estling.config.ts to fail

[nbouvrette]

With the recent official support of ESLint TypeScript config (ref), when trying to use eslint-plugin-json-files with this simple config in my eslint.config.ts (flatfile format):

  {
    files: ['**/package.json'],
    plugins: {
      'json-files': jsonFilesPlugin,
    },
    processor: jsonFilesPlugin.processors.json,
    rules: {
      // Requires the `license` field in package.json.
      // @see https://github.com/kellyselden/eslint-plugin-json-files/blob/master/docs/rules/require-license.md
      'json-files/require-license': ['error', 'allow-unlicensed'],
      // Prevents dependency collisions between `dependencies` and `devDependencies` in package.json.
      // @see https://github.com/kellyselden/eslint-plugin-json-files/blob/master/docs/rules/require-unique-dependency-names.md
      'json-files/require-unique-dependency-names': ['error'],
      // Use sort-package-json to keep your keys in a predictable order.
      // @see https://github.com/kellyselden/eslint-plugin-json-files/blob/master/docs/rules/sort-package-json.md
      'json-files/sort-package-json': ['error'],
    },
  },

I'm getting Unsafe assignment of an error typed value errors both when assigning the plugins and the processor as well as a Unsafe member access .processors on an 'error' typed value error on the processor value. I think that both these error are cause by the lack of type file.

I created a tempoary d.ts file to work around this issue but it would be great if this would be part of the original package:

declare module 'eslint-plugin-json-files' {
  import type { Linter, Rule } from 'eslint'

  const plugin: {
    processors: {
      json: Linter.Processor
    }
    configs?: Record<string, Linter.Config>
    rules?: Record<string, Rule.RuleModule>
  }

  export default plugin
}