Function after

sdk/src/CloudSocketClientLib.js:2425–2450

(count, callback, err_cb)

                    module.exports = after

                    function after(count, callback, err_cb) {
                        var bail = false
                        err_cb = err_cb || noop
                        proxy.count = count

                        return (count === 0)
                            ? callback()
                            : proxy

                        function proxy(err, result) {
                            if (proxy.count <= 0) {
                                throw new Error('after called too many times')
                            }
                            --proxy.count

                            // after first error, rest are passed to err_cb
                            if (err) {
                                bail = true
                                callback(err)
                                // future error callbacks will go to error handler
                                callback = err_cb
                            } else if (proxy.count === 0 && !bail) {
                                callback(null, result)
                            }
                        }
                    }

                    function noop() {}