prezto_config/modules/node/init.zsh

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#
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# Loads the Node Version Manager and enables npm completion.
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#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
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# Zeh Rizzatti <zehrizzatti@gmail.com>
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#
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# Load NVM into the shell session.
if [[ -s "$HOME/.nvm/nvm.sh" ]]; then
source "$HOME/.nvm/nvm.sh"
fi
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# Return if requirements are not found.
if (( ! $+commands[node] )); then
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return 1
fi
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# Load NPM completion.
if (( $+commands[npm] )); then
cache_file="${0:h}/cache.zsh"
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if [[ "$commands[npm]" -nt "$cache_file" || ! -s "$cache_file" ]]; then
# npm is slow; cache its output.
npm completion >! "$cache_file" 2> /dev/null
fi
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source "$cache_file"
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unset cache_file
fi
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