Type declarations in @types/loadable__component are broken when using typescript's moduleResolution:nodenext option

[simon-paris]

🐛 Bug Report

When using typescript with {"module": "NodeNext","moduleResolution": "nodenext",}, the module @types/loadable__component exports {default:loadableFunc} when it should export loadableFunc.

To Reproduce

With this typescript config:

{
  "compilerOptions": {
    "baseUrl": ".",
    "module": "NodeNext",
    "moduleResolution": "nodenext",
    "jsx": "preserve",
    "allowSyntheticDefaultImports": false,
    "noEmit": true,
    "isolatedModules": true,
    "strict": true,
    "allowUmdGlobalAccess": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "verbatimModuleSyntax": true,
    "allowImportingTsExtensions": true
  },
  "include": [
    "./*.ts"
  ],
}

And this code:

import loadable from "@loadable/component";
loadable(() => import("./component.ts"));

Typescript will print this error:

test.ts:4:1 - error TS2349: This expression is not callable.
  Type 'typeof import("/Users/simonparis/temp/node_modules/@types/loadable__component/index")' has no call signatures.

4 loadable(() => import("./component.ts"));
  ~~~~~~~~

I don't fully understand this behavior, but setting type:module in the package.json file of the types package seems to fix it. Unsure if that would break anything. The types package may need both a CJS and ESM copy.

Expected behavior

This should not be an error.

Link to repl or repo (highly encouraged)

https://github.com/simon-paris/loadable-types-bug-repro

Issues without a reproduction link are likely to stall.

Run npx envinfo --system --binaries --npmPackages @loadable/component,@loadable/server,@loadable/webpack-plugin,@loadable/babel-plugin --markdown --clipboard

Paste the results here:

## System:
 - OS: macOS 13.5
 - CPU: (8) arm64 Apple M1 Pro
 - Memory: 113.53 MB / 16.00 GB
 - Shell: 5.9 - /bin/zsh
## Binaries:
 - Node: 22.12.0 - ~/.nvm/versions/node/v22.12.0/bin/node
 - npm: 10.9.0 - ~/.nvm/versions/node/v22.12.0/bin/npm
 - pnpm: 9.11.0 - ~/.nvm/versions/node/v22.12.0/bin/pnpm
 - bun: 1.0.0 - ~/.bun/bin/bun
 - Watchman: 2024.11.18.00 - /opt/homebrew/bin/watchman
## npmPackages:
 - @loadable/component: ^5.16.4 => 5.16.4