swc uses _interopRequireDefault when it should use _interopRequireWildcard

[cspotcode]

EDIT this description is wrong; see #1786 (comment)

Describe the bug

swc does not inline _interopRequireDefault when it is needed and when externalHelpers is false. Instead it inlines _interopRequireWildcard, although that function is not used.

Input code

I can reproduce the bug using SWC's JS API

swc.transformSync(`
  import Foo from "bar";
  export {Foo} from "bar";
`, {
  module: {type: 'commonjs'}
})

The output includes the _interopRequireWildcard helper, but omits _interopRequireDefault.

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
var _bar = _interopRequireDefault(require("bar"));
function _interopRequireWildcard(obj) {
    if (obj && obj.__esModule) {
        return obj;
    } else {
        var newObj = {
        };
        if (obj != null) {
            for(var key in obj){
                if (Object.prototype.hasOwnProperty.call(obj, key)) {
                    var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {
                    };
                    if (desc.get || desc.set) {
                        Object.defineProperty(newObj, key, desc);
                    } else {
                        newObj[key] = obj[key];
                    }
                }
            }
        }
        newObj.default = obj;
        return newObj;
    }
}
Object.defineProperty(exports, "Foo", {
    enumerable: true,
    get: function() {
        return _bar.Foo;
    }
});

Config

n/a

Expected behavior

swc inlines the _interopRequireDefault helper function when it is used.

Version
The version of @swc/wasm: 1.2.58

Additional context

Possibly related to #138

[cspotcode]

I realize now that the problem is slightly different than I described. _interopRequireWildcard is the correct helper. The bug is that swc emits var _bar = _interopRequireDefault(require("bar")); when it should emit var _bar = _interopRequireWildcard(require("bar"));

[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.