Firebase @DocumentId annotation in javascript

I'm developing Android app using Kotlin and Chrome Extension using plain HTML, CSS, JavaScript.

In Kotlin I use this @DocumentId annotation in my model class, it helps me get an object with a parameter id, because the id is key of the document in Cloud Firestore.

data class Word(
    @DocumentId
    val id: String = "",
    var term: String = "",
    var translation: String = "",
    var bookmark: Boolean = false,
    var reviewInterval: Int = 1
) 

Then I use this code in JavaScript. But how to use @DocumentId annotation like in previous example. JavaScript doesn't support annotation and I haven't found anything in docs. How to achieve the same result in JavaScript?

class Word {
    constructor(
        id = "",
        term = "",
        translation = "",
        bookmark = false,
        reviewInterval = 1
    ) {
        this.id = id;
        this.term = term;
        this.translation = translation;
        this.bookmark = bookmark;
        this.reviewInterval = reviewInterval;
    }
}