How to filter data search with find()?

Question

Mongoose

I have a Post model that contains the field "postId" : "1"

I send a request and I want to find in the model exactly the postId from the request in the postId field
This option const post = await Post.find({ postId:postId}) did not work

router.put("/:postId/edit", async (req, res) => {
    try {
        const post = await Post.find(как вписать фильтры)

    .
    } catch(err) {
        ...
    }
})

Answer 1

What type of field? Number? So the query parameter must be brought to a number.