YARN and NPM are package managers, i.e., a collection of a certain set of tools that automate several processes like installation, configuration, etc. The automation is done by developers. Speaking in terms of who is better, let’s begin with performance. YARN stands undefeated in performance measures due to its ability to parallelly download and cache. The next aspect is scalability; YARN and NPM are well-to-do products in their respective sectors. There is a big community that supports the two. Therefore, both are scalable and will be used in the future. Before code execution, YARN verifies the integrity of its packages with checksums. NPM allows code to execute on the packages automatically.