`@vue/shared generateCodeFrame` can infinite loop

Vue version

3.4.26

Link to minimal reproduction

https://github.com/aturingmachine/vue-sfc-infinite-loop

Steps to reproduce

Have a component making use of a Generic in it's Props that extends an enum.

i.e. (this is pulled from the linked reproduction)

<script setup lang="ts" generic="K extends SomeEnum">
import type { SomeEnum } from '@/consants';
import type { EventParams } from '@/event-params';
import { onMounted } from 'vue';

interface Props<K extends SomeEnum> {
  eventParams: EventParams[K]
}

const props = defineProps<Props<SomeEnum>>()

also occurs if the generic attribute is not used

Have SomeEnum defined in another file (in this case src/constants.ts)

This part I have not fully figured out the exact cases but please bear with me

If the lengths of the 2 files match some (currently) unknown condition, the call to generateCodeFrame will get stuck in an infinite loop in its inner for loop.

Link to Line in Question

What is expected?

That the compiler will report the error at the correct lines.

What is actually happening?

The Compiler gets stuck in an infinite loop and hangs indefinitely.

System Info

System:
  OS: Linux 6.6 Manjaro Linux
  CPU: (12) x64 Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
  Memory: 46.28 GB / 62.65 GB
  Container: Yes
  Shell: 5.9 - /usr/bin/zsh
Binaries:
  Node: 22.0.0 - ~/.nvm/versions/node/v22.0.0/bin/node
  npm: 10.5.1 - ~/.nvm/versions/node/v22.0.0/bin/npm
npmPackages:
  vue: ^3.4.21 => 3.4.26

Any additional comments?

This issue has been brought up once and resolved seen here.

The issue can be "resolved" by reducing the number of lines in either the Component file or the file containing the Enum.

It seems the case j >= lines.length on line 26 leading to the continue trips the infinite loop, but I may be wrong.

The provided reproduction link is a simplified version of our production code that triggered the initial issue.

vuejs / core