dev/+js: use nvm to manage node

dev/+js/env.zsh

@@ -1 +1,4 @@
 path=(./node_modules/.bin $path)
+
+export NVM_DIR="$HOME/.nvm"
+[[ -s "$NVM_DIR/nvm.sh" ]] && . "$NVM_DIR/nvm.sh"

dev/+js/install

@@ -1,12 +1,10 @@
 #!/usr/bin/env bash
 
-case $OSTYPE in
-    darwin*)
-        brew install node
-        ;;
-    linux*)
-        if [[ -f /etc/arch-release ]]; then
-            sudo pacman --needed --noconfirm -S nodejs npm
-        fi
-        ;;
-esac
+if [[ ! -d ~/.nvm ]]; then
+    git clone https://github.com/creationix/nvm ~/.nvm
+    cd $HOME/.nvm && git checkout v0.33.2
+    export NVM_DIR="$HOME/.nvm"
+    . $HOME/.nvm/nvm.sh
+
+    nvm install node
+fi

dev/+js/update

@@ -1,5 +1,9 @@
 #!/usr/bin/env bash
 
-npm=$(which npm)
-[[ -w $npm ]] || npm="sudo $npm"
-$npm -g update
+(
+    cd "$NVM_DIR"
+    git fetch origin
+    git checkout $(git describe --abbrev=0 --tags --match "v[0-9]*" origin)
+) && . "$NVM_DIR/nvm.sh"
+
+nvm run node update -g