Evaluate export default beforehand

[josteph]

Describe the bug
Currently export should be evaluated beforehand to avoid undefined if bundled using webpack. Refer to this issue webpack/webpack#7767.

Input code

export default function get(key: string) {
  console.log(key);
}

Config

{
  jsc: {
    parser: {
      syntax: "typescript",
      tsx: false,
      decorators: false,
      dynamicImport: true
    },
    target: "es5",
    loose: true,
    externalHelpers: false
  },
  sourceMaps: true,
  minify: false,
  env: {
    mode: "entry",
    coreJs: 3
  },
  module: {
     type: "commonjs"
  }
}

Expected behavior
Babel sample output:

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true,
});

exports.default = get;

function get(key) {
  // code here
}

Version
The version of @swc/core: 1.2.51

Additional context
If we change the export this way, it would work normally as expected.

function get(key: string) {
  // code
}

export default get;

SWC output (changed the export as described above) (works):

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true,
});
exports.default = void 0;

function get(key) {
  // code here
}

var _default = get;
exports.default = _default;

Current SWC output (doesn't work):

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true,
});

function get(key) {
  // code here
}

exports.default = get;

[kdy1]

How did you get the output of swc?
Your .swcrc does not contains module config, so I failed to reproduce it.

[kdy1]

I think I can fix it without reproduction.

I was wrong. I need more context.

[josteph]

Ah right, I forgot to put the module type. It should be "commonjs".

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.