[BUG] Exports for config object does not work in version 14.0.6 but works in 14.0.5

[darekg11]

Bug Description

Export of config seems to be broken in version 14.0.6 which introduced support for Full ESM support with native import/export

Environment

• migrate-mongo version: 14.0.6
• Node.js version: 25.2.1
• MongoDB version: 8
• Operating System: Ubuntu

Steps to Reproduce

1. Init new Node project
2. Install migrate-mongo dependency in version 14.0.6
3. Try to run following code:

const { config: MongoMigrateConfig, up: MongoMigrateUp, database: MongoMigrateDatabase } = require("migrate-mongo");
MongoMigrateConfig.set({});

Expected Behavior

Should work without throwing any errors

Actual Behavior

This returns error that set is not a function because MongoMigrateConfig is null

Additional Context

Reverting back to version 14.0.5 makes everything work again without changing anything in the code.

Could you please tell me if this is a bug or if config should be now required differently? According to docs this should still work as expected:
https://github.com/seppevs/migrate-mongo/tree/master?tab=readme-ov-file#configsetyourconfigobject

[frederik-b]

I can reproduce this and might have relevant additonal info:

Version 14.0.5

import migrate from 'migrate-mongo'
console.log(migrate)
==> {
  init: [AsyncFunction (anonymous)],
  create: [AsyncFunction (anonymous)],
  up: [AsyncFunction (anonymous)],
  down: [AsyncFunction (anonymous)],
  status: [AsyncFunction (anonymous)],
  database: { connect: [AsyncFunction: connect] },
  config: {
    DEFAULT_CONFIG_FILE_NAME: 'migrate-mongo-config.js',
    set: [Function: set],
    shouldExist: [AsyncFunction: shouldExist],
    shouldNotExist: [AsyncFunction: shouldNotExist],
    getConfigFilename: [Function: getConfigFilename],
    read: [AsyncFunction: read]
  }
}

Version 14.0.6/7

import migrate from 'migrate-mongo'
console.log(migrate)
==> Promise { <pending> }

I think in my ts setup this get's rewritten to require calls...
so this might be a commonjs/esmodule issue