minifying only html css and js files

Getting an error when I run html-minifier and there is an image anywhere. I'd like to limit it to certain file types, say html, css, and js.

Seems weird to break it into separate scripts, can I combine the flags, or exclude images? Can't find any documentation.

My npm script:

`"minify": "html-minifier --input-dir ./public --output-dir ./public --collapse-whitespace --file-ext html",`

what I want is something like..

`"minify": "html-minifier --input-dir ./public --output-dir ./public --collapse-whitespace --file-ext html --file-ext css --file-ext js",`

but that doesn't work

Start with the html-minifier CLI entry point and the handling of the --file-ext option shown in the npm script. Check how input files are selected and how existing CLI behavior is tested; done means the command can safely target html, css, and js files without attempting to process images, with the supported usage documented.

Written by the indexing model from the issue text.