Cannot find module <filename> or its corresponding type declarations

[hrishikesh]

Have you declared types for *.scss:

Can't import CSS/SCSS modules. TypeScript says "Cannot Find Module"

In any case, if a library version upgrade/downgrade is causing/fixing issues, the problem appears to be with that library instead of Netlify. Especially since it’s a major version, have you checked the migration guide?

Is this related:

[Support Guide] Netlify app builds locally but fails on deploy (case sensitivity)

Last Reviewed By Netlify Support Staff: December 2022 Are you struggling to understand why your project runs locally but errors out with missing files or logs that point toward issues with case when you try and build on Netlify? You are not alone. Often, case (as in: UPPERCASE or lowercase letters in filenames or paths) can cause problems. Here is a guide to understanding how case sensitivity issues present themselves, why they arise, and how you can fix them! 1. Errors you might see Case sens…