MacにNode.jsをインストールしてnpmを使えるようにする(Nodebrew利用)

$ node -v

$  brew install nodebrew 

$  brew install nodebrew 
==> Downloading https://github.com/hokaccha/nodebrew/archive/v1.0.1.tar.gz
==> Downloading from https://codeload.github.com/hokaccha/nodebrew/tar.gz/v1.0.1
######################################################################## 100.0%
==> Caveats
You need to manually run setup_dirs to create directories required by nodebrew:
  /usr/local/opt/nodebrew/bin/nodebrew setup_dirs

Add path:
  export PATH=$HOME/.nodebrew/current/bin:$PATH

To use Homebrew's directories rather than ~/.nodebrew add to your profile:
  export NODEBREW_ROOT=/usr/local/var/nodebrew

Bash completion has been installed to:
  /usr/local/etc/bash_completion.d

zsh completions have been installed to:
  /usr/local/share/zsh/site-functions
==> Summary
🍺  /usr/local/Cellar/nodebrew/1.0.1: 8 files, 38.6KB, built in 4 seconds

$ nodebrew -v 
nodebrew 1.0.1

Usage:
    nodebrew help                         Show this message
    nodebrew install <version>            Download and install <version> (from binary)
    nodebrew compile <version>            Download and install <version> (from source)
    nodebrew install-binary <version>     Alias of `install` (For backword compatibility)
    nodebrew uninstall <version>          Uninstall <version>
    nodebrew use <version>                Use <version>
    nodebrew list                         List installed versions
    nodebrew ls                           Alias for `list`
    nodebrew ls-remote                    List remote versions
    nodebrew ls-all                       List remote and installed versions
    nodebrew alias <key> <value>          Set alias
    nodebrew unalias <key>                Remove alias
    nodebrew clean <version> | all        Remove source file
    nodebrew selfupdate                   Update nodebrew
    nodebrew migrate-package <version>    Install global NPM packages contained in <version> to current version
    nodebrew exec <version> -- <command>  Execute <command> using specified <version>

Example:
    # install
    nodebrew install v8.9.4

    # use a specific version number
    nodebrew use v8.9.4

$ nodebrew ls-remote 

$ nodebrew install-binary latest 

$ nodebrew install-binary latest
Fetching: https://nodejs.org/dist/v13.9.0/node-v13.9.0-darwin-x64.tar.gz
Warning: Failed to create the file
Warning: /Users/hiro/.nodebrew/src/v13.9.0/node-v13.9.0-darwin-x64.tar.gz: No 
Warning: such file or directory

curl: (23) Failed writing body (0 != 1020)
download failed: https://nodejs.org/dist/v13.9.0/node-v13.9.0-darwin-x64.tar.gz

$ mkdir -p ~/.nodebrew/src

$ nodebrew list
v13.9.0

current: none

$ nodebrew use  v13.9.0

$ nodebrew list
v13.9.0

current: v13.9.0

$ echo 'export PATH=$HOME/.nodebrew/current/bin:$PATH' >> ~/.bashrc

Add path:
   export PATH=$HOME/.nodebrew/current/bin:$PATH

if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi

export PATH=$PATH:/Users/hiro/.nodebrew/current/bin

$ node -v
v13.9.0

$ npm -v
6.13.7