I want to use the eslint-utils with TypeScript. However, the project doesn't have types. [typescript-eslint](https://github.com/typescript-eslint/typescript-eslint/blob/25ea953cc60b118bd385c71e0a9b61c286c26fcf/packages/experimental-utils/src/ast-utils/eslint-utils/index.ts) and [eslint-plugin-vue](https://github.com/vuejs/eslint-plugin-vue/blob/c775584b922d21fe62f6aee0f638ed9b75968f1f/typings/eslint-utils/index.d.ts) has type themselves. How about having type for developers who want to use TypeScript?