Babel: [7.0] Remove add-module-exports use internally

Created on 15 Jan 2017 · 3Comments · Source: babel/babel

This was added when upgrading Babel itself to use Babel 6 in #3438. I just wrote it interally since it was temporarily (https://github.com/59naga/babel-plugin-add-module-exports) which we don't recommend doing due to later modules/cjs interop issues.

Relevant for context:

http://stackoverflow.com/questions/33505992/babel-6-changes-how-it-exports-default
https://github.com/babel/babel/issues/2212 (Kill CommonJS default export behaviour)

aka we have to deal with it as well

Basically revert https://github.com/babel/babel/pull/3438/commits/d6576490314b0369f68b43aaaf7b49d615108ff8 + fix tests

[ ] read CONTRIBUTING.md
[ ] removing the plugin from the .babelrc config in package.json https://github.com/babel/babel/blob/47bb77d35276a54016025bdc1621fb27be1f4baa/package.json#L61
[ ] removing the plugin code itself in https://github.com/babel/babel/blob/master/scripts/add-module-exports.js
[ ] run test with make test-only or npm run test
[ ] tests will fail in a few places, so you'll need to fix those. Might have to change to use import or the easier way is just to add a .default where necessary. So where it's doing some kind of require, you want to do require('a') -> require('a').default if the test fails.