[typescript]: Default export type not being picked up with module: "nodenext"

[wight554]

• Rollup Plugin Name: @rollup/plugin-typescript
• Rollup Plugin Version: ^9.0.2
• Rollup Version: 2.78.1 (vite ^3.1.4)
• Operating System (or Browser): macOS 12.6
• Node Version: 16
• Link to reproduction (⚠️ read below): https://github.com/wight554/rollup-typescript-repro

Expected Behavior

Typing should be picked-up

Actual Behavior

This expression is not callable.
  Type 'typeof import("/Users/Volodymyr_Zhdanov/playground/blog-template/node_modules/@rollup/plugin-typescript/types/index")' has no call signatures.

Additional Information

Steps to reproduct:

1. Add these settings to tsconfig:

    "module": "NodeNext",
    "moduleResolution": "NodeNext",

2. Add "type": "module" to package.json
3. Import and use typescript plugin
4. See the error

3 possible fixes:

1. Add named export for plugin
2. Use CJS styled export in typings: export default function typescript => export = typescript;
3. Use declaration merging to make default export namespace and function simultaneously, example here: make type definitons "module": "nodenext" compatible fastify/fastify-cookie#184

I've used this thin wrapper for fixing typings before, might be helpful: https://github.com/wight554/vite-plugin-typescript/blob/main/index.d.ts

[unional]

#1375

[Polve]

I have the same problem: are there any workarounds before an official support is complete?

[wight554]

I have the same problem: are there any workarounds before an official support is complete?

Seems like this one is completely ignored. When I created issue without repro I received feedback immediately. No one checked this issue since I wasted my time on repro

[Polve]

I'm sorry I don't understand what you mean, exactly: I'm unable to understand any of your workarounds: are you saying I ignored them?

[rijkvanzanten]

Ran into this as well.. Too bad it's ignored!

For now, I'm using the following hacky workaround:

import virtualDefault from '@rollup/plugin-virtual';
import aliasDefault from '@rollup/plugin-alias';

const virtual = virtualDefault as unknown as virtualDefault.default;
const alias = aliasDefault as unknown as aliasDefault.default;

[DetachHead]

adding "type": "module" to the plugin's package.json seems to fix this, but i'm not sure if that's the correct solution since i'm not too familiar with esm

[cowwoc]

Per algolia/algoliasearch-client-javascript#1431 (comment) and https://arethetypeswrong.github.io/ the problem is not necessarily node.js, but rather the export statement.

I can't say I fully understand it myself, but take a look.

[lazarljubenovic]

I've described the issue in more detail here #1541, including the exact reason why it happens and the way to fix it (skip over to "Additional Details" for it). I'm not familiar enough with this repository to write a fix, since it's almost entirely about the way the packages are distributed, and not the code itself.

[shellscape]

OK. Just be aware this is unlikely to see a resolution without community contribution

[benmccann]

Setting up publint for the package would also catch this. For example:

• https://publint.dev/@rollup/[email protected]
• https://publint.dev/@rollup/[email protected]