Thanks for the write up! I used yarn when NPM was very slow, but I ran into some issues when I would use yarn, then later use npm or vice versa. I eventually we

Thanks for the write up! I used yarn when NPM was very slow, but I ran into some issues when I would use yarn, then later use npm or vice versa. I eventually went back to NPM and have been happy with the results. But I don't mix the two at all. So that is a question going forward - will mixing npm and yarn in the same installation result in problems and will the result be exactly the same? If not, it would be helpful to understand how the results differ.