Installation on Arch Linux
On Arch, node, npm, and corepack are distributed in separate packages. The command sudo pacman -S nodejs npm corepack installs all three. The executable is located in /usr/bin/node. As Arch is a rolling release distribution, the nodejs package generally tracks the current version of Node.js, which is not always an LTS.
Staying on an LTS version
If you need a specific LTS, Arch offers dedicated packages such as nodejs-lts-iron or nodejs-lts-jod (names change with each LTS cycle, verify depending on the available version). For multi-version needs, nvm or fnm remain the most flexible solution, available via the AUR.
Configuration
The user configuration for npm is stored in ~/.npmrc. On Arch, Corepack does not ship with nodejs: install the corepack package (included in the command above), then enable pnpm and yarn with corepack enable. Note that Corepack was removed from Node.js core as of Node 25, but Arch still distributes it via its own package.