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prezto/modules/node/init.zsh
Indrajit Raychaudhuri d45d87b08f node: Make nvm lookup mechanism more efficient in homebrewed environment
In homebrewed environment, avoid using `brew --prefix nvm` which is
ruby based and is super slow. Instead, rely on homebrew standard
behavior wherein all installed packages are available in canonical
path $(brew --prefix)/opt/<package> (for nvm it would obviously be
`$(brew --prefix)/opt/nvm`).

NB: `$(brew --prefix)` (without additional argument) is a simple shell
shortcut and doesn't have the same performance impact.
2018-12-12 22:32:51 -06:00

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#
# Loads the Node Version Manager and enables npm completion.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
# Zeh Rizzatti <zehrizzatti@gmail.com>
#
# Load manually installed NVM into the shell session.
if [[ -s "$HOME/.nvm/nvm.sh" ]]; then
source "$HOME/.nvm/nvm.sh"
# Load package manager installed NVM into the shell session.
elif (( $+commands[brew] )) && \
[[ -d "${nvm_prefix::="$(brew --prefix 2> /dev/null)"/opt/nvm}" ]]; then
source "$(brew --prefix nvm)/nvm.sh"
unset nvm_prefix
# Load manually installed nodenv into the shell session.
elif [[ -s "$HOME/.nodenv/bin/nodenv" ]]; then
path=("$HOME/.nodenv/bin" $path)
eval "$(nodenv init - --no-rehash zsh)"
# Load package manager installed nodenv into the shell session.
elif (( $+commands[nodenv] )); then
eval "$(nodenv init - --no-rehash zsh)"
# Return if requirements are not found.
elif (( ! $+commands[node] )); then
return 1
fi
# Load NPM and known helper completions.
typeset -A compl_commands=(
npm 'npm completion'
grunt 'grunt --completion=zsh'
gupl 'gulp --completion=zsh'
)
for compl_command in "${(k)compl_commands[@]}"; do
if (( $+commands[$compl_command] )); then
cache_file="${TMPDIR:-/tmp}/prezto-$compl_command-cache.$UID.zsh"
# Completion commands are slow; cache their output if old or missing.
if [[ "$commands[$compl_command]" -nt "$cache_file" \
|| "${ZDOTDIR:-$HOME}/.zpreztorc" -nt "$cache_file" \
|| ! -s "$cache_file" ]]; then
command ${=compl_commands[$compl_command]} >! "$cache_file" 2> /dev/null
fi
source "$cache_file"
unset cache_file
fi
done
unset compl_command{s,}