Typescript 5.5+ required for plugin-react-swc 4.x

[k-funk]

Related plugins

• plugin-react

• plugin-react-swc

• plugin-react-oxc

• plugin-rsc

Describe the bug

Today I bumped my vite from 6.x, and @vitejs/plugin-react-swc to 4.x.

My build is now failing due to [this line](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-
react-swc/src/index.ts#L321).

$ npm run build
...

58 export { react as default, pluginForCjs as "module.exports" };
                                              ~~~~~~~~~~~~~~~~
node_modules/@vitejs/plugin-react-swc/index.d.ts:58:61 - error TS1128: Declaration or statement expected.

58 export { react as default, pluginForCjs as "module.exports" };
                                                               ~
Found 2 errors in the same file, starting at: node_modules/@vitejs/plugin-react-swc/index.d.ts:58

✓ 5421 modules transformed.

My team is using TS 5.3.3, and it's a difficult upgrade for us.

The "module.exports" syntax (string literal as export name) was introduced in TypeScript 5.5.

Was the TS 5.5+ requirement an intentional change?

Reproduction

https://github.com/k-funk/vite-plugin-react-bug1

Steps to reproduce

1. Install dependencies:

   npm install

2. Run the build:

   npm run build

3. You'll see these errors:

   node_modules/@vitejs/plugin-react-swc/index.d.ts(58,44): error TS1003: Identifier expected.
   node_modules/@vitejs/plugin-react-swc/index.d.ts(58,61): error TS1128: Declaration or statement expected.
   

System Info

System:
    OS: macOS 26.1
    CPU: (16) arm64 Apple M4 Max
    Memory: 1.83 GB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.6.0 - /Users/kfunk/.nvm/versions/node/v24.6.0/bin/node
    npm: 11.5.1 - /Users/kfunk/.nvm/versions/node/v24.6.0/bin/npm
  Browsers:
    Chrome: 142.0.7444.162
    Firefox: 144.0.2
    Safari: 26.1
  npmPackages:
    @vitejs/plugin-react-swc: ^4.2.2 => 4.2.2
    vite: ^7.2.2 => 7.2.2

Used Package Manager

npm

Logs

No response

Validations

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• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
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• The provided reproduction is a minimal reproducible example of the bug.

[hi-ogawa]

You may know already but the typing issue in package d.ts can be temporary suppressed by skipLibCheck: true.

[k-funk]

You may know already but the typing issue in package d.ts can be temporary suppressed by skipLibCheck: true.

i did try adding that to my tsconfig.json, but it had no effect

i've added that change to my sample repo anyways, so you can see that as well

[hi-ogawa]

Ah, sorry about that. Indeed it looks like old typescript cannot get through syntax error. Just tested with react ts template https://stackblitz.com/edit/vitejs-vite-c9i2dzbp?file=tsconfig.node.json

Not sure if there's a workaround on your side (other than patching). Not sure it's safe to strip that export from d.ts on ourside either.

[hi-ogawa]

Link to typescript PR microsoft/TypeScript#58640

Just found a similar report on Vue plugin is closed vitejs/vite-plugin-vue#616. If you cannot update typescript, I'd suggest patching react plugin package to scratch unsupported syntax. This is a valid syntax and other packages could be just doing the same, so I don't think finding workaround on React plugin side is worth it.