Force Bacon.js stream update

app.jsx

var React = require("react")
var Comments = require("./comments/comments.jsx")
var Bacon = require("baconjs")

React.render(<Comments comments={[]}/>, document.getElementById("app"))

document.addEventListener("DOMContentLoaded", (event) => {

    var buttonClickS = Bacon.fromEvent(document.getElementById("add-comment"), "click")
    var newCommentValueS = Bacon.fromEvent(document.getElementById("new-comment"), "input").map(e => e.target.value)

    var newCommentPresent = newCommentValueS.map(value => value !== "").toProperty(false)
    var newComment = newCommentValueS.filter(v => v.length > 0).toProperty("")

    var commentAdded = Bacon.when(
        [newComment, buttonClickS], (comment, click) => {
            console.log("Submit comment: " + comment)
            document.getElementById("new-comment").value = ""
            return comment
        }
    )

    // Enables/disables the submit button.
    newCommentPresent.onValue(function(enabled) {
        var el = document.getElementById("add-comment")
        if (enabled) {
            el.removeAttribute("disabled")
        } else {
            el.setAttribute("disabled", "disabled")
        }
    })

    // Comments submitted.
    var comments = commentAdded.scan([], (result, comment) => {
        result.push(comment)
        return result
    })

    var reRender = Bacon.combineTemplate({
        comments: comments
    })

    reRender.onValue((state) => {
        React.render(<Comments {...state}/>, document.getElementById("app"))
    })
})