[npm] introducing npm

.config/npm/npmrc

@@ -0,0 +1,4 @@
+prefix=${XDG_DATA_HOME}/npm
+cache=${XDG_CACHE_HOME}/npm
+tmp=${XDG_RUNTIME_DIR}/npm
+init-module=${XDG_CONFIG_HOME}/npm/config/npm-init.js

.config/zsh/.zprofile

@@ -21,6 +21,7 @@ export TEXMFHOME="$XDG_DATA_HOME/texmf"
 export CARGO_HOME="$XDG_DATA_HOME/cargo"
 export OPAMROOT="$XDG_DATA_HOME/opam"
 export COQBIN="$OPAMROOT/default/bin/"
+export NPM_CONFIG_USERCONFIG="$XDG_CONFIG_HOME/npm/npmrc"
 
 ## default programs
 export SUDO_ASKPASS="$HOME/.local/bin/dmenupass"