babel-plugin-add-module-exports

Installation

npm install babel-plugin-add-module-exports --save-dev

Why?

Babel@6 doesn't export default module.exports any more - T2212 Kill CommonJS default export behavior.

Babel@6 transforms the following file

// index.js
export default 'foo'

into

'use strict';
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = 'foo';

Therefore, it is a need to use the ugly .default in node.js.

require('./bundle.js') // { default: 'foo' }
require('./bundle.js').default // 'foo'

This plugin follows the babel@5 behavior - add the module.exports if only the export default declaration exists.

'use strict';
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = 'foo';
module.exports = exports['default'];

Therefore, our old codes still work fine - the .default goes away. 😉

require('./bundle.js') // foo

Usage

Install this plugin from npm:

npm install babel-plugin-add-module-exports --save-dev

Write the name to babelrc. It works with preset-es2015 to output CommonJS code:

{
  "presets": ["es2015"],
  "plugins": [
    "add-module-exports"
  ]
}

It also works with transform-es2015-modules-umd plugin to output UMD code: (It is a must to place UMD plugin after this plugin.)

{
  "presets": ["es2015"],
  "plugins": [
    "add-module-exports",
    "transform-es2015-modules-umd"
  ]
}

License

MIT