repro case for https://github.com/babel/babel/issues/2877

.babelrc

{
  "presets": [
    "es2015"
  ],
  "plugins": [
    "transform-runtime",
    "transform-export-extensions"
  ]
}

.gitignore

node_modules

lib.js

export const foo = 'bar'

main-transpiled.js

'use strict';

import _Object$defineProperty from 'babel-runtime/core-js/object/define-property';
Object.defineProperty(exports, "__esModule", {
  value: true
});

var _lib = require('./lib');

var _loop = function _loop(_key2) {
  if (_key2 === "default") return 'continue';

  _Object$defineProperty(exports, _key2, {
    enumerable: true,
    get: function get() {
      return _lib[_key2];
    }
  });
};

for (var _key2 in _lib) {
  var _ret = _loop(_key2);

  if (_ret === 'continue') continue;
}

console.log(module.exports.foo);

main.js

export * from './lib'

console.log(module.exports.foo)

package.json

{
  "name": "runtime-import-export-repro",
  "version": "0.0.1",
  "main": "src/main.js",
  "scripts": {
    "transpile": "babel main.js -o main-transpiled.js",
    "start": "babel-node main.js"
  },
  "devDependencies": {
    "babel-cli": "^6.1.18",
    "babel-core": "^6.1.19",
    "babel-plugin-transform-export-extensions": "^6.1.18",
    "babel-plugin-transform-runtime": "^6.1.18",
    "babel-preset-es2015": "^6.1.18"
  },
  "dependencies": {
    "babel-runtime": "^6.1.18"
  }
}

Found this gist after some Googling (thanks for making this gist!) but had to do more digging to find the issue tracker. It's not on GitHub, it's here: https://phabricator.babeljs.io/T2877