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function nvm --description "Node version manager"
for silent in --silent -s
if set --local index (contains --index -- $silent $argv)
set --erase argv[$index] && break
end
set --erase silent
end
set --local cmd $argv[1]
set --local ver $argv[2]
if set --query silent && ! set --query cmd[1]
echo "nvm: Version number not specified (see nvm -h for usage)" >&2
return 1
end
if ! set --query ver[1] && contains -- "$cmd" install use
for file in .nvmrc .node-version
set file (_nvm_find_up $PWD $file) && read ver <$file && break
end
if ! set --query ver[1]
echo "nvm: Invalid version or missing \".nvmrc\" file" >&2
return 1
end
end
set --local their_version $ver
switch "$cmd"
case -v --version
echo "nvm, version 2.2.13"
case "" -h --help
echo "Usage: nvm install <version> Download and activate the specified Node version"
echo " nvm install Install the version specified in the nearest .nvmrc file"
echo " nvm use <version> Activate the specified Node version in the current shell"
echo " nvm use Activate the version specified in the nearest .nvmrc file"
echo " nvm list List installed Node versions"
echo " nvm list-remote List available Node versions to install"
echo " nvm list-remote <regex> List Node versions matching a given regex pattern"
echo " nvm current Print the currently-active Node version"
echo " nvm uninstall <version> Uninstall the specified Node version"
echo "Options:"
echo " -s, --silent Suppress standard output"
echo " -v, --version Print the version of nvm"
echo " -h, --help Print this help message"
echo "Variables:"
echo " nvm_arch Override architecture, e.g. x64-musl"
echo " nvm_mirror Use a mirror for downloading Node binaries"
echo " nvm_default_version Set the default version for new shells"
echo " nvm_default_packages Install a list of packages every time a Node version is installed"
echo "Examples:"
echo " nvm install latest Install the latest version of Node"
echo " nvm use 14.15.1 Use Node version 14.15.1"
echo " nvm use system Activate the system's Node version"
case install
_nvm_index_update
string match --entire --regex -- (_nvm_version_match $ver) <$nvm_data/.index | read ver alias
if ! set --query ver[1]
echo "nvm: Invalid version number or alias: \"$their_version\"" >&2
return 1
end
if test ! -e $nvm_data/$ver
set --local os (command uname -s | string lower)
set --local ext tar.gz
set --local arch (command uname -m)
switch $os
case aix
set arch ppc64
case sunos
case linux
case darwin
case {MSYS_NT,MINGW\*_NT}\*
set os win
set ext zip
case \*
echo "nvm: Unsupported operating system: \"$os\"" >&2
return 1
end
switch $arch
case i\*86
set arch x86
case x86_64
set arch x64
case arm64
string match --regex --quiet "v(?<major>\d+)" $ver
if test "$os" = darwin -a $major -lt 16
set arch x64
end
case armv6 armv6l
set arch armv6l
case armv7 armv7l
set arch armv7l
case armv8 armv8l aarch64
set arch arm64
end
set --query nvm_arch && set arch $nvm_arch
set --local dir "node-$ver-$os-$arch"
set --local url $nvm_mirror/$ver/$dir.$ext
command mkdir -p $nvm_data/$ver
if ! set --query silent
echo -e "Installing Node \x1b[1m$ver\x1b[22m $alias"
echo -e "Fetching \x1b[4m$url\x1b[24m\x1b[7m"
end
if ! command curl $silent --progress-bar --location $url |
command tar --extract --gzip --directory $nvm_data/$ver 2>/dev/null
command rm -rf $nvm_data/$ver
echo -e "\033[F\33[2K\x1b[0mnvm: Invalid mirror or host unavailable: \"$url\"" >&2
return 1
end
set --query silent || echo -en "\033[F\33[2K\x1b[0m"
if test "$os" = win
command mv $nvm_data/$ver/$dir $nvm_data/$ver/bin
else
command mv $nvm_data/$ver/$dir/* $nvm_data/$ver
command rm -rf $nvm_data/$ver/$dir
end
end
if test $ver != "$nvm_current_version"
set --query nvm_current_version && _nvm_version_deactivate $nvm_current_version
_nvm_version_activate $ver
set --query nvm_default_packages[1] && npm install --global $silent $nvm_default_packages
end
set --query silent || printf "Now using Node %s (npm %s) %s\n" (_nvm_node_info)
case use
test $ver = default && set ver $nvm_default_version
_nvm_list | string match --entire --regex -- (_nvm_version_match $ver) | read ver __
if ! set --query ver[1]
echo "nvm: Can't use Node \"$their_version\", version must be installed first" >&2
return 1
end
if test $ver != "$nvm_current_version"
set --query nvm_current_version && _nvm_version_deactivate $nvm_current_version
test $ver != system && _nvm_version_activate $ver
end
set --query silent || printf "Now using Node %s (npm %s) %s\n" (_nvm_node_info)
case uninstall
if test -z "$ver"
echo "nvm: Not enough arguments for command: \"$cmd\"" >&2
return 1
end
test $ver = default && test ! -z "$nvm_default_version" && set ver $nvm_default_version
_nvm_list | string match --entire --regex -- (_nvm_version_match $ver) | read ver __
if ! set -q ver[1]
echo "nvm: Node version not installed or invalid: \"$their_version\"" >&2
return 1
end
set --query silent || printf "Uninstalling Node %s %s\n" $ver (string replace ~ \~ "$nvm_data/$ver/bin/node")
_nvm_version_deactivate $ver
command rm -rf $nvm_data/$ver
case current
_nvm_current
case ls list
_nvm_list | _nvm_list_format (_nvm_current) $argv[2]
case lsr {ls,list}-remote
_nvm_index_update || return
_nvm_list | command awk '
FILENAME == "-" && (is_local[$1] = FNR == NR) { next } {
print $0 (is_local[$1] ? " ✓" : "")
}
' - $nvm_data/.index | _nvm_list_format (_nvm_current) $argv[2]
case \*
echo "nvm: Unknown command or option: \"$cmd\" (see nvm -h for usage)" >&2
return 1
end
end
function _nvm_find_up --argument-names path file
test -e "$path/$file" && echo $path/$file || begin
test ! -z "$path" || return
_nvm_find_up (string replace --regex -- '/[^/]*$' "" $path) $file
end
end
function _nvm_version_match --argument-names ver
string replace --regex -- '^v?(\d+|\d+\.\d+)$' 'v$1.' $ver |
string replace --filter --regex -- '^v?(\d+)' 'v$1' |
string escape --style=regex || string lower '\b'$ver'(?:/\w+)?$'
end
function _nvm_list_format --argument-names current regex
command awk -v current="$current" -v regex="$regex" '
$0 ~ regex {
aliases[versions[i++] = $1] = $2 " " $3
pad = (n = length($1)) > pad ? n : pad
}
END {
if (!i) exit 1
while (i--)
printf((current == versions[i] ? " ▶ " : " ") "%"pad"s %s\n",
versions[i], aliases[versions[i]])
}
'
end
function _nvm_current
command --search --quiet node || return
set --query nvm_current_version && echo $nvm_current_version || echo system
end
function _nvm_node_info
set --local npm_path (string replace bin/npm-cli.js "" (realpath (command --search npm)))
test -f $npm_path/package.json || set --local npm_version_default (command npm --version)
command node --eval "
console.log(process.version)
console.log('$npm_version_default' ? '$npm_version_default': require('$npm_path/package.json').version)
console.log(process.execPath)
" | string replace -- ~ \~
end
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