Wrote down some findings regarding string concatenation performance in JavaScript. Seems like this is still an area that could use some work.
https://bit.ly/fast-string-concatenation-in-javascript …pic.twitter.com/2Mu8VEJG9g
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Added the disclaimer.
I understood your point @bmeurer. I won't go back and refactor my code to use these.
I was just asking if there are any books/articles you could recommend to learn more about JS data structure from performance viewpoint. I just wanted to understand their internals.
You can read our blog posts if you're interested in engine internals 
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