Feature request: Add an option to replace "file-loader" with any other customized loader

[liujingbreak]

Current the url-loader is hard coded to fallback calling file-loader internally.
What I wish is that I can use a customized loader to replace file-loader, e.g. lib/dr-file-loader

{
	test: /\.(jpg|png|gif|svg|jpeg|eot|woff2|woff|ttf)$/,
	use: [
          {loader: 'lib/dr-file-loader'},
          {loader: 'lib/url-loader'},
        ]
}

Or

{
     test: /\.(jpg|png|gif|svg|jpeg|eot|woff2|woff|ttf)$/,
	use: [
          {loader: 'lib/url-loader', options: {
                    use: [ {loader: 'lib/dr-file-loader'} ]
                },
        ]
}

[alexander-akait]

@webpack-contrib/org-maintainers what do your think about this?

[hulkish]

I think this is a good idea. I personally haven't had this need - but I can see why it would be useful.

Maybe this can be better accounted for in the rules config api?

[michael-ciniawsky]

options.fallback

{
   loader: 'url-loader',
   options: { fallback: 'my-custom-loader' }
}

On the other hand requiring a file isn't that special, @liujingbreak what is your usecase for a custom loader, what functionality is file-loader missing atm ?

[DaxChen]

My use case will be:
If the image is less than limit, inline it;
If the image exceeds the limit, fall back to responsive-loader or resize-image-loader to generate multiple responsive images (for <img srcSet />.

Any thoughts on how can this be done?

[alexander-akait]

Done in #88