Get Node Package manager that project is using

.get_node_package_manager.sh

get_node_package_manager() # Get Node package manager
{
    if [[ -f bun.lockb ]]; then
        echo "bun"
    elif [[ -f pnpm-lock.yaml ]]; then
        echo "pnpm"
    elif [[ -f yarn.lock ]]; then
        echo "yarn"
    elif [[ -f package-lock.json ]]; then
        echo "npm"
    else
        echo "Package manager not found"
    fi
}