speed-iterm-nvm.sh

~/loadnvm.sh
```
#!/bin/zsh

#delete the aliases
unalias nvm
unalias npm
unalias node

#(this is the loader code nvm put in my .bashrc)
export NVM_DIR="$HOME/.nvm"
  [ -s "/usr/local/opt/nvm/nvm.sh" ] && . "/usr/local/opt/nvm/nvm.sh"  # This loads nvm
  [ -s "/usr/local/opt/nvm/etc/bash_completion.d/nvm" ] && . "/usr/local/opt/nvm/etc/bash_completion.d/nvm"  # This loads nvm bash_completionalias python=/usr/local/bin/python3.7
```

.zshrc
```
# nvm
alias nvm='. ~/loadnvm.sh; nvm "$@"'
alias npm='. ~/loadnvm.sh; npm "$@"'
alias node='. ~/loadnvm.sh; node "$@"'
```