Sequelize - N:M Association Count Number of Included Model with Condition

I have two models: Articles and Tags. These models are associated to each other by belongsToMany, so an article may have many tags, and tags can be used by many articles.

models

Articles.belongsToMany(Tags, {
    foreignKey: 'articleId', 
    as: 'tags', 
});

Tags.belongsToMany(Articles, {
    foreignKey: 'tagId', 
    as: 'articles', 
});

When querying, I need to get articles that has searchTag as tag, but get all tag information associated to article.

What I tried is:

const articles = await Articles.findAll({
    include: [{
        model: Tags, 
        as: 'tags', 
        where: {
            tag: searchTag, 
        }, 
        attributes: ['id', 'tag'], 
        required: true, 
    }], 
    where: { 
        // querying condition
    }, 
});

but this code gets the matching tag only, which fails to get all tags that belongs to the article.

Another solution I thought was to check if any tag that tag=searchTag exists in tags, but I have no idea how to fit this condition into sequelize object. What is the proper way to fit this condition into sequelize object? Or any other way to solve this problem other than getting all ids of articles that has searchedTag and get all articles based on the ids?

const articles = await Articles.findAll({
    include: [{
        model: Tags, 
        as: 'tags', 
        // where: {
        //    tag: searchTag, 
        // }, 
        attributes: ['id', 'tag'], 
        required: true, 
    }], 
    where: { 
       $tags.id$': searchTag // <-- New
    }, 
});