Check if NPM bins have been made available via PATH using Node.js on *nix

prepend-npm-bin-to-path_zsh.js

// CP.execSync('zsh -xl') <- example of getting all environment variable sets in the current ZSH load. Seems to not work for the subshells it's based on

// Determine if $SHELL (convention used by Bash & ZSH) is a path to ZSH & add a $PATH with the CWD NPM bin path prepended to the current user's zshrc file
!!~CP.execSync('echo $SHELL').toString().match(/(?!(^\/bin\/))([a-z]+)(?=(\n$))/g) || CP.execSync('echo \'export PATH=./node_modules/.bin:$PATH\' >> ~/.zshrc')