Is ES6 `export class A` equivalent to `module.exports = A`?

Question

When I see the compiled code by Babel, they do not seem to be equivalent. Actually, the former transforms to exports.A = A, which is not equivalent to mod

Answer 1

You can use

export default class A {

}

Or

class A {

}

export default A;

Which will export as

exports["default"] = A;
module.exports = exports["default"];

There's an explanation why in the interop section here.

In order to encourage the use of CommonJS and ES6 modules, when exporting a default export with no other exports module.exports will be set in addition to exports["default"].