Wrirting helpers in javascript for Handlebars.java

[Karan Pradhan]

I have written the following helper for a regular number comparison.

Handlebars.registerHelper('compare', function(lvalue, op, rvalue, options) {

    lvalue = parseFloat(lvalue);
    rvalue = parseFloat(rvalue);

    if (arguments.length < 3)
        throw new Error("Handlerbars Helper 'compare' needs 2 parameters");

    var operator = op || "==";

    var operators = {
        '==':       function(l,r) { return l == r; },
        '===':      function(l,r) { return l === r; },
        '!=':       function(l,r) { return l != r; },
        '<':        function(l,r) { return l < r; },
        '>':        function(l,r) { return l > r; },
        '<=':       function(l,r) { return l <= r; },
        '>=':       function(l,r) { return l >= r; },
        'typeof':   function(l,r) { return typeof l == r; }
    }

    if (!operators[op])
        throw new Error("Handlerbars Helper 'compare' doesn't know the operator "+op);

    return operators[op](lvalue,rvalue);

});

But if I use this helper in a if based block helper, the block is executed even if the helper returns false. Am I supposed to use a particular data type for returning data to the templates. 

P.S. I'm using a map value resolver and map based context in the template.