Description
Feature request
What problem does this feature solve?
When developing a custom theme, I found it difficult (or impossible) to configure VuePress within the custom theme. For example, to add a plugin to markdown-it for my custom theme, instead of giving a default configuration to my theme, I have to edit .vuepress/config.js. It seems losing user-friendliness. I hope future versions support configuration within custom themes.
enhanceApp.js may achieve something, but seems not really straightforward...
What does the proposed API look like?
It's good if there would be a config file in theme repository (maybe .vuepress/theme/themeConfig.js), and settings in this file can effect or override site configuration in a way.
How should this be implemented in your opinion?
Check both site configuration and theme configuration. Priority can be: site (user) config > theme config.
Are you willing to work on this yourself?**
Yes, but I'm afraid if I have the capability 😅.