When you "Reinvent the wheel", you implement only what you need in an optimized way. This gives a couple of advantages: you own your code, no bloat, usually si

When you "Reinvent the wheel", you implement only what you need in an optimized way. This gives a couple of advantages: you own your code, no bloat, usually simpler due to not having all the bells and whistles, less abstraction, so faster because there is no free lunch, minimize the attack surface for supply chain attacks... For fun, the next time you are tempted to install a BlaZiNg FaSt MaDe in RuSt software: get the source, install cargo audit and run the cargo audit on that project. See how many vulnerabilities there are. So far, in my experience, all the software I checked come with their list of vulnerabilities from transitive dependencies. I don't know about npm, I only know by reputation and it's enough for me to avoid.