The problem is I want to get the frequently used emojis from emoji-mart, because I also want to embed/show them in my application.
Thankfully, the Store is exposed, so I could get them manually (see also #987), but that only saves the emojiId -> counter mapping, unsorted and also does seem slightly less advanced than what is actually shown in the picker.

Now FrequentlyUsed is also exposed (thanks again!), so I can just hook into that, but that is also harder than I thought/necessary, as it has the wrong typing.

STR

Load emoji-mart (in my case via getEmojiMart()) via await import("../../node_modules/emoji-mart/dist/module.js"); essentially. But for typing I import("../../node_modules/emoji-mart/dist/index.d.js").
This is just a dynamic import in my case, but it should work with static imports, too.

Prod source code:

        /** @type {typeof import("../../node_modules/emoji-mart/dist/index.d.js").FrequentlyUsed._get1} */
        // @ts-ignore
        const frequentlyUsedGetter = ((await getEmojiMart()).FrequentlyUsed).get;

        /** {@type string[] */
        frequentlyUsed = frequentlyUsedGetter({
            maxFrequentRows: maximumNumberOfElements,
            perLine: 1
        });
        console.debug("Frequently used emojis found via getter:", frequentlyUsed);

https://github.com/rugk/awesome-emoji-picker/blob/d1a16bf23884993788a1d3c2d32f16450de0cdb7/src/common/modules/EmojiMartLazyLoaded.js#L67-L76

What happens

Now this already contains the fixes/workaround, if you don't do that, you e.g. get TS/typing errors (as you can see this is JS code but with VSCode/TS server typings enabled/shown):

Note this likely happens, because the index.d.ts typings that are exported are somewhat broken here:

declare function _get1({ maxFrequentRows, perLine }: {
    maxFrequentRows: any;
    perLine: any;
}): any[];
export const FrequentlyUsed: {
    add: typeof add;
    _get1: typeof _get1;
    DEFAULTS: string[];
};

They seem to want this to be _get1, maybe renamed due to the Store method having the same name before:

declare function set(key: string, value: string): void;
declare function get(key: string): any;
export const Store: {
    set: typeof set;
    get: typeof get;
};
declare function add(emoji: {
    id: string;
}): void;

Property 'get' does not exist on type '{ add: (emoji: { id: string; }) => void; _get1: ({ maxFrequentRows, perLine }: { maxFrequentRows: any; perLine: any; }) => any[]; DEFAULTS: string[]; }'.ts(2339)

What should happen

Here you can see the function, which is just called get:

This is how it should also be called in all typings, they are otherwise wrong.

Ideal solution

I actually had to create quite a lot of code to mangle with these emojis and convert them to proper Emoji/Skin instances, like when searching with SearchIndex.

That said, your function seems to do a lot of filtering and that seems useful. So I would like to use it to get the emojis.

If you want to see the whole code I added, see here:
https://github.com/rugk/awesome-emoji-picker/blob/d1a16bf23884993788a1d3c2d32f16450de0cdb7/src/common/modules/EmojiMartLazyLoaded.js#L57-L147
The skins complicate the matter, but somehow your picker also manages these (I could not pinpoint the code in your code base, where exactly.)

I would also create a PR to contribute parts of this code, if you want.