Assume.js + rollbar.com

assumejs-rollbar.js

// Released under CC0 (http://creativecommons.org/publicdomain/zero/1.0/)
'use strict';

var assume = require('assumejs');
var rollbar = require('rollbar');
var util = require('util');


rollbar.init('your post_server_item key');


assume.overwriteNotify(function (_super) {

    return function (err, context) {
        var details = {
            actual:   util.inspect(err.actual,   { depth: 10 }),
            expected: util.inspect(err.expected, { depth: 10 }),
            context:  util.inspect(context,      { depth: 10 })
        };
        rollbar.handleErrorWithPayloadData(err, { custom: details });
    };

});


var context = { some: 'context' };

assume(true, context).to.eql(false);