Getting my node_modules corrupted several times (packages in package.json "randomly" going missing after installing new ones) requiring nuking node_modules and

Getting my node_modules corrupted several times (packages in package.json "randomly" going missing after installing new ones) requiring nuking node_modules and doing a fresh npm install. yarn has been a breeze to use so far, I'm loving the quick installs. Only nitpick is that I have to be inside of the working directory of the package.json when adding a new package, because yarn for some reason does not travel up the hierarchy and installs it in the same directory as the first encountered package.json, like npm does.