So you want to babel all of your javascript, but you don't want to think about gulp or webpack or crap like that. You want to use tools that come preinstalled on OSX.
Use this.
#! /usr/bin/env zsh | |
for OLD in src/**/*.js ; do | |
NEW=`echo "$OLD" | cut -b 5-` | |
mkdir -p `dirname $NEW` | |
echo "transpiling $OLD" | |
./node_modules/.bin/babel $OLD > $NEW | |
done |