Failed to convert NeDB Node callback to Bacon EventStream

Failed to convert NeDB Node callback to Bacon EventStream

By : user2954513
Date : November 22 2020, 10:31 AM
I hope this helps . When you pass db.insert that way, you lose its evaluation context ("this" is no longer the database). Try using the other form of fromNodeCallback:
code :
insert = Bacon.fromNodeCallback(db, 'insert', {a: 'Hi!'})

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Use variable as EventStream or Property in Bacon.js

Use variable as EventStream or Property in Bacon.js

By : Harry86us era
Date : March 29 2020, 07:55 AM
This might help you asEventStream creates an Bacon.js EventStream from a jQuery event. So you can you only apply it to a jQuery object, not to a JavaScript variable. So in your case you can use the jQuery/HTML5 event hashchange to create an EventStream from its changes:
code :
         .map(function () { return window.location.hash; });
Nice way to add errors to Bacon EventStream?

Nice way to add errors to Bacon EventStream?

By : user2746822
Date : March 29 2020, 07:55 AM
should help you out You can just return the Bacon.Error directly from flatMap:
code :
var streamWithPossibleProblems = bus.flatMap(function(v) {
    if (v == "problem") {
        return new Bacon.Error("Error to be reported later")
    return v
Failed to convert socket.io event to Bacon EventStream

Failed to convert socket.io event to Bacon EventStream

By : dice
Date : March 29 2020, 07:55 AM
Hope that helps In version 0.7.46 there's an improved version of Bacon.fromEventTarget (or just Bacon.fromEvent btw), that should find the appropriate bind/unbind pair for you.
Get EventStream from a node with React and Bacon

Get EventStream from a node with React and Bacon

By : vronchet
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I would say that it is OK. Similar approaches are used in these two examples:
https://github.com/niklasvh/react-bacon-flux-poc https://github.com/milankinen/react-bacon-todomvc
Bacon.js EventStream from value

Bacon.js EventStream from value

By : Nie Ying
Date : March 29 2020, 07:55 AM
I wish did fix the issue. for your answers! Perhaps Bacon.js was not what I was looking for so I decided to make my own "Reactive Programming" library. It calculates new values immediately without the need to check the value with setTimeout.
code :
var = createReactiveValue = function(initialValue) {
return {
    "observers": [], // Call these functions with a new value when it has been set
    "set": function(newValue) {
        this.value = newValue;

        this.observers.forEach(function(observer) {
            // Call observers asynchronously
            setTimeout(function() { observer(this.value) }, 0);
    "get": function() {
        return this.value;
    "addObserver": function(observer) {

// If any of the dependant values change, sets reactive value 'value' to the result of calling 'result'
var = makeReaction = function(value, dependencies, result) {
    // Start watching changes in dependencies
    dependencies.forEach(function(dependency) {
        dependency.addObserver(function(newValue) {
            var newResult = result(value, dependencies);

// When 'reactiveValue' is changed, calls the given 'result' function with the new value
var = watchReaction = function(reactiveValue, result) {
    // Start watching changes in reactive value
    reactiveValue.addObserver(function(newValue) {

var a = createReactiveValue(2);
var b = createReactiveValue(1);
var c = createReactiveValue(null);

// We want c to depend on both a and b. If either a or b change, c should    automatically recalculate it's value
makeReaction(c, [a, b], function(c, [a, b]) {
    return a.get() + b.get();

// If c is changed, for whatever reason, log it
watchReaction(c, function(newC) {
    console.log("Reaction completed: " + a.get() + " + " + b.get() + " = " + c.get());

// Test it by resetting value a to random
    var newValue = Math.random();
    a.set(newValue); },
1000); // Logs the new result imm
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