Vue 2.7+ no longer fails on and report type errors in build and serve commands

[RuudV]

Version

2.7.8

Reproduction link

github.com

Steps to reproduce

Based from the vuejs-type-bug-demo root folder:

• cd ./hello-world-2.6 && npm install && npm run build
• cd ./hello-world-2.7 && npm install && npm run build

What is expected?

In 2.7 I expect the errors in typing to fail the build as it does in 2.6

What is actually happening?

Succeeding the build without any errors thrown

[derat]

I noticed this as well after upgrading a project from 2.6.14 to 2.7.8. Type errors seem to be silently ignored by both npm run serve and npm run build.

[nieyuyao]

This seems to be a compiler-sfc issue that causes the ForkTsCheckerWebpackPlugin to not get the correct script. This pr may solve the issue.

[yyx990803]

This relies on ts-loader to fix its compatibility with Vue 2.7.

The latest recommendation, however, is to avoid doing type check as part of the webpack build, and instead using vue-tsc, which also works with Vue 2.7+. You can start it in a separate process in watch mode.

[RuudV]

Thanks for your reply. We will try that, but it would be nice if this got mentioned in the upgrade to vue 2.7+, so users can determine if they can spare the extra time invested to setup vue-tsc and disable type checking in webpack during serve and build commands.

[rossinek]

I can confirm that this particular problem is fixed in 2.7.11