Should I ignore some file types?

[DiggesT]

The Verbum project is using size-limit GH actions tests, and it's has an error: "No loader is configured for ".ttf" files...". This files using by Katex library.

In my branch I fix it by adding ignore file types list: ["*.woff", "*.woff2", "*.ttf"].

Can you explain me please, why should I add ignore types list? And is that corrct to ignore some file types for analyse library size?