Version

3.0.7

Reproduction link

https://codesandbox.io/s/kind-bush-1evm5?file=/src/App.vue

Steps to reproduce

use webpack and ts-loader to compile .vue file

What is expected?

ts-loader should throws error. becuse SetupContext has no member root

What is actually happening?

ts-loader and ForkTsCheckerWebpackPlugin passed it

The error is there with TS so this is probably something with your local TS setup.

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