$_
nvm.sh
nvm.sh uses `NVM_SCRIPT_SOURCE="$_"` to detect its source location. Adding `: nvm.sh` before each source line ensures `$_` is set correctly, preventing breakage when the previous command (e.g., `set -ex`) overwrites it.
--help
Co-authored-by: Naomi Quinones <52065567+naomiquinones@users.noreply.github.com> Co-authored-by: Dena Burd <me@Denas-MacBook-Air.local>