Yes, it's only for educational purpose. Thank you for giving a good example with notes and made this post better. I will certainly take a deeper look in lodash now.
Lodash is a good example of an open source library that adds a huge value in your project, especially in the pre-JS6 era.
As for its code, as with any big open-source project, it has the added value from many of its contributor expertise. Crowd anything is general better then what a small team can achieve on its own.
Yap, You are right. Take a look in some popular library code and learn in that way. I will personally take that path in future. Thank you for advice.
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