How can I exclude some files from vite build?

[Illia-S-dev]

Hey there. I need to exclude (ignore) some files from vite prod build. They are needed only for tests (vitests environment).

I tried to use

build: {
  rollupOptions: {
    external: filesPathToExclude,
  },
},

in vite config.
P.S I took an example here https://stackoverflow.com/questions/75412767/how-to-tell-vite-to-exclude-a-subset-of-files-in-a-directory-from-build

But I got the following error in the browser

I also tried to add this

esbuild: {
  exclude: filesPathToExclude,
},

But the same error after building.

Is there idea how can I exclude files from prod build?

[Illia-S-dev]

I found where was an error.

Just using excluded file inside component.
Removed this file from component helped me.