To be fair, many of these apply to other JS engines as well: - manipulating `arguments` should be avoided - when possible, avoid looping over the properties o

To be fair, many of these apply to other JS engines as well: - manipulating `arguments` should be avoided - when possible, avoid looping over the properties of an object (using `in` or `Object.keys`) In the process of optimizing for v8, you may expose other bad patterns (e.g. megamorphic functions) whose replacement will boost performance everywhere. For example, even though https://github.com/petkaantonov/deque https://github.com/petkaantonov/deque was developed and tuned for v8, it is still much faster than alternatives in other engines.