array, object are mutable => compare on array/ object are reference

object destructing:

destructing by reference

how shallow compare works

iterate key of object and compare if primitive value are the same. if key's value is object or array => it compare reference

https://hacks.mozilla.org/2015/07/es6-in-depth-let-and-const/

https://github.com/stoeffel/awesome-fp-js#readme https://github.com/addyosmani/es6-tools#readme https://github.com/sindresorhus/awesome