upgrade to babel 6

[rodneyrehm]

a few things have changed and with babel 6 -
http://jamesknelson.com/the-six-things-you-need-to-know-about-babel-6/

[rodneyrehm]

I'm not sure this is such a great idea at this point.

• https://twitter.com/rodneyrehm/status/665276559603929088
• https://twitter.com/rodneyrehm/status/665287030067326976

-    "babel": "^5.8.23",
+    "babel-cli": "^6.1.18",
+    "babel-plugin-transform-es2015-modules-amd": "^6.1.18",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.1.20",
+    "babel-preset-es2015": "^6.1.18",

[rodneyrehm]

The main problem here was that I couldn't get transform-es2015-modules-amd to generate AMD files that would provide the default export, as is easily accomplised for CommonJS using babel-plugin-add-module-exports. However, transform-es2015-modules-umd works fine with add-module-exports. So it is possible to cheat AMD systems by providing them UMD files. It's not a perfect solution, but it works.

# generating the UMD bundle
browserify dist/src/ally.js \
  --debug \
  --standalone ally \
  --transform rollupify \
  --transform [ babelify --presets [ es2015 ] ] \
  | exorcist dist/ally.js.map > dist/ally.js

# generating the CommonJS module files
babel --presets es2015 \
  --plugins add-module-exports \
  --source-maps \
  --out-dir dist/common \
  dist/src

# generating the UMD module files
babel --presets es2015 \
  --plugins add-module-exports,transform-es2015-modules-umd \
  --source-maps \
  --out-dir dist/amd \
  dist/src