> "I recently learned that some Node.js engineers prefer stream classes when building strings, for performance reasons." Pretty much tells you everything you ne

> "I recently learned that some Node.js engineers prefer stream classes when building strings, for performance reasons." Pretty much tells you everything you need to know about node js, I guess. Google Closure Library includes a StringBuffer class. [1] I recall it having explanatory notes, but I don't see them in the code now. JavaScript engines can optimize a string concatenating to in-place edit, if there is only one reference to the first string. The StringBuffer class keeps the reference count at one, guaranteeing this optimization is available, even if the StringBuffer itself is ever shared. [1] https://github.com/google/closure-library/blob/master/closure/goog/string/stringbuffer.js https://github.com/google/closure-library/blob/master/closur...