TypeError: Cannot read properties of undefined (reading 'length')

[trueberryless]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and discussions and couldn’t find anything (or linked relevant results below)

Affected package

[email protected]

Steps to reproduce

Okay, this is very weird, when I try to repro, it works totally fine as you can see here:
https://stackblitz.com/edit/node-zqgpemoq?file=index.js

But I'm using the plugin in this repo and as you can see here the tests are failing, because the plugin throws the error TypeError: Cannot read properties of undefined (reading 'length').
You can also try by cloning the repo, checking out into tests branch, cd .\packages\starlight-spell-checker\tests\fixtures\quotes-throw-error-invalid-content\, pnpm i and running pnpm astro build. (I know this is a VERY BAD example for a repro, but I have no clue why it's just happening in this specific case...

Actual behavior

Plugin fails when smart has only 2 entries with TypeError: Cannot read properties of undefined (reading 'length')

Expected behavior

Plugin should return vfile correctly.

The issue gets fixed, when I add a safety mechanism:

- expected = markers[(stack.length - 1) % markers.length]
+ expected = markers[(stack.length - 1 + markers.length) % markers.length]

Related issues:
#12
#11

Runtime

[email protected]

Package manager

[email protected]

Operating system

Windows 11

Build and bundle tools

Astro

[trueberryless]

I'm very sorry @wooorm to be this fricking annoying, but I'm totally lost why it works perfectly in all tests and in the repro but doesn't in my case... 🙏

[wooorm]

Thanks!

[wooorm]

Fixed in 6.0.2!