Use Object.freeze for passing config

[nsisodiya]

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze

When One module/component pass config to subView, they pass config object,
many times, config object is modified by child view (subView) and it further pass config to another Module.

config is the variable which belongs to Parent module and child must not modify it !!

The same principal apply for pubsub mechanism too !!