[TypeScript] Default export of the module has or is using private name 'VueConstructor'

[gluons]

Version

2.5.3

Reproduction link

https://github.com/gluons/vue-issue-6999

Steps to reproduce

• Export some object that contain Vue or typeof Vue types.
• Set compilerOptions -> declaration to true

What is expected?

Able to build without error.

It should be able to export plugin/library with TypeScript declaration.

What is actually happening?

Default export of the module has or is using private name 'VueConstructor' happened when built it.

---

I'm developing Vue component with TypeScript.
I also need TypeScript to generate declaration for other TypeScript developer (And also JavaScript with Vetur 🙂).
But I face this error. 😢

Thanks bbuchanan for the cause.

[ktsn]

I've made a PR to expose VueConstructor #7002
In the meantime, you can manually annotate the install function by PluginFunction

export default {
  install: install as PluginFunction<void>
}

[relign]

Version
2.5.13

I try vue@2.5.13, when set compilerOptions.declaration = true in tsconfig.json,it export error
Default export of the module has or is using private name 'VueConstructor'.

[gluons]

@relign Try importing VueConstructor above your code.

import { VueConstructor } from 'vue';
/* or */
import Vue, { VueConstructor } from 'vue'; // With Vue

[trusktr]

I've opened a request to fix issues like these in TypeScript by bringing declaration files to parity with language features. microsoft/TypeScript#35822