NVM lazy loading script

lazy-load-nvm.sh

#!/bin/bash

#
# NVM lazy loading script
#
# NVM takes on average half of a second to load, which is more than whole prezto takes to load.
# This can be noticed when you open a new shell.
# To avoid this, we are creating placeholder function
# for nvm, node, and all the node packages previously installed in the system
# to only load nvm when it is needed.
#
# This code is based on the scripts:
# * https://www.reddit.com/r/node/comments/4tg5jg/lazy_load_nvm_for_faster_shell_start/d5ib9fs
# * http://broken-by.me/lazy-load-nvm/
# * https://github.com/creationix/nvm/issues/781#issuecomment-236350067
#

NVM_DIR="$HOME/.nvm"

# Skip adding binaries if there is no node version installed yet
if [ -d $NVM_DIR/versions/node ]; then
  NODE_GLOBALS=(`find $NVM_DIR/versions/node -maxdepth 3 \( -type l -o -type f \) -wholename '*/bin/*' | xargs -n1 basename | sort | uniq`)
fi
NODE_GLOBALS+=("nvm")

load_nvm () {
  # Unset placeholder functions
  for cmd in "${NODE_GLOBALS[@]}"; do unset -f ${cmd} &>/dev/null; done

  # Load NVM
  [ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"

  # (Optional) Set the version of node to use from ~/.nvmrc if available
  nvm use 2> /dev/null 1>&2 || true

  # Do not reload nvm again
  export NVM_LOADED=1
}

for cmd in "${NODE_GLOBALS[@]}"; do
  # Skip defining the function if the binary is already in the PATH
  if ! which ${cmd} &>/dev/null; then
    eval "${cmd}() { unset -f ${cmd} &>/dev/null; [ -z \${NVM_LOADED+x} ] && load_nvm; ${cmd} \$@; }"
  fi
done

EDIT: People finding this, yes that works just fine :)

So I just source this from ~/.zshrc right? That appears to work but just making sure!

Is it possible to integrate this with https://github.com/so-fancy/diff-so-fancy as the git pager? When I do

git config --global core.pager "diff-so-fancy | less --tabs=4 -RFX"

Then attempting git diff before nvm is loaded yields:

diff-so-fancy | less --tabs=4 -RFX: 1: diff-so-fancy: not foun

Yeah it doesn't always work for me, I just first run nvm so everything is loaded and then run the commands needed.

Just run https://github.com/asdf-vm/asdf-nodejs or https://github.com/nodenv/nodenv directly.
NVM was never great and specially now there are much better options.

Yeah I've been told that me using nvm is already considered outdated. I'll check one of these out soon, thanks.

Thanks. worked