laughinghan/mathquill — comment on commit d4ded2cd815d57d1d9c6272690c1366b6bc135b8
File: src/tree.js line 167
By laughinghan:

it is in fact measurably faster than `.push`, by a few milliseconds, if you do it millions of times. In other words, it is literally nanoseconds faster, which is basically not a reason. We should just use `.push`