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frpbacon.js

Nice way to add errors to Bacon EventStream?

I've tried to find a good solution for adding errors to an bacon.js EventStream - and propagating them. All this because I wan't to handle the errors later possibly at multiple clients. I've found a hack with flatMap but it's a ... hack:

var streamWithPossibleProblems = bus.flatMap(function(v) {
    if (v == "problem") {
        return Bacon.sequentially(0, [new Bacon.Error("Error to be reported later")])
    }
    return v
});
Solution

  • You can just return the Bacon.Error directly from flatMap:

    var streamWithPossibleProblems = bus.flatMap(function(v) {
    if (v == "problem") {
        return new Bacon.Error("Error to be reported later")
    }
    return v
});