MarkDown.plugins type problem when configuring config.ts

[MonoLogueChi]

• [x] I confirm that this is an issue rather than a question.

Bug report

I use vuepress v1.9.7

I use config.ts to configure VuePress, but I have encountered problems when configuring MarkDown.

Steps to reproduce

Description according to https://Vuepress.Vuejs.org/config/#markdown-plugins

What is expected?

I can use the following two ways at the same time.

import { MarkdownConfig } from "vuepress/config";

export default <MarkdownConfig>{
  plugins: [
   ["markdown-it-sub", {}],
  ],
};

or

import { MarkdownConfig } from "vuepress/config";

export default <MarkdownConfig>{
  plugins: {
   "markdown-it-sub": {}
  },
};

What is actually happening?

But the second (object style) type check cannot pass

Other relevant information

I found that the MarkdownConfig type in vuepress/types/src/markdon.ts has the following sections

plugins?: Array<string | [string, Record<string, any>]>;

It seems that there is no support for object type here.

[MonoLogueChi]

I am temporarily solved with the following solutions.

import { MarkdownConfig } from "vuepress/config";

interface MyMarkdownConfig extends Omit<MarkdownConfig, "plugins"> {
  plugins?: Record<string, any> | Array<string | [string, Record<string, any>]>;
}

export default <MyMarkdownConfig>{
  plugins: {
   "markdown-it-sub": {}
  },
};