How can I add type hints for my custom global Vue directives?

Question

I can get TypeScript hints if I import or create a directive in a SFC file as follows:

import vFocus from 'my-custom-component-library';

demo with ts hints

Howerver, if I register it globally in main.ts, I cannot get the type hints.

For example:

app.directive('focus', vFocus);

demo without ts hints

So how can I add type hints if I want to globally install it?

Answer 1

According to the vue-language issue 465, currently I can declare the Directives in ComponentCustomProperties for global register directives but it may pollution component global properties.

// shim-vue.d.ts
import vFocus from 'my-custom-component-library'

declare module '@vue/runtime-core' {
    export interface ComponentCustomProperties {
        vFocus: typeof vFocus;
    }
}

export { }