Vercel's Serverless Function crashes due to not being able to find the "image-size" module (and is also required for astro build for some reason..?)

[SapphicMoe]

What version of astro are you using?

2.1.2

Are you using an SSR adapter? If so, which one?

I'm using the Vercel SSR adapter.

What package manager are you using?

yarn (version 3.3.1)

What operating system are you using?

I'm using Ubuntu under WSL (Windows Subsystem for Linux) in this case.

What browser are you using?

Microsoft Edge

Describe the Bug

With the release of Astro 2.1(?), I have been getting an error when building my website with the image-size dependency, even though my workspace doesn't require it (as can be seen below, it's just yarn.lock):

I decided to install image-size and include it to my package.json file, and sure enough, astro build worked locally.
However when I go and deploy my site to Vercel, it says that a serverless function has crashed.

It says that Vercel still requires the dependency, even after it is included in the package.json file.

Any help is appreciated. Thank you!

Link to Minimal Reproducible Example

None. I don't think I can use Stackblitz to reproduce this issue, since it is related to Vercel.

Participation

• I am willing to submit a pull request for this issue.

[mfrachet]

Probably related to #6470 which seems to be fixed and closed 😊 . Waiting for a release 🚀

[Princesseuh]

Closing as a duplicate of #6470, seems to be exact same issue! image-size is a capricious package unfortunately 😓