[Question] What's the point of sourceMap: true

[kud]

Hello,

When I activate sourceMaps, I've got this result:

Source map error: Error: sourceMapURL could not be parsed
Resource URL: blob:http://xxxx/b82d1808-4542-8b45-a829-b13f36458b84
Source Map URL: data:application/json;base64,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

What sourceMaps in this loader should do?

[michael-ciniawsky]

Where does the source map posted come from ? Where does the Error come from ?

[kud]

I've no idea. I've just activated it and this is what I've got in the console of Firefox Nightly.

[alexander-akait]

@kud seems bug in Firefox, can you create minimum reproducible test repo?

[kud]

I'm sorry, this is a https://github.com/webpack-contrib/css-loader issue in fact.

[kud]

You can see my issue here: webpack-contrib/css-loader#640

However, I don't see the point yet of sourceMap on THIS loader? Can you explain it to me please? O:)

[alexander-akait]

@kud css-loader generate source maps, but you can not want to insert them, honestly it does not make much sense, but this is a standard practice for all loaders what can generate or work with source maps.

[kud]

I mean source maps for style-loader, not css-loader where I can see the point as it shows the url of the css file.

Or maybe did you make a mistake with the name of the loader you typed?

[alexander-akait]

@kud when you use sourceMap: true for style-loader - you say what style-loader should insert soucre map url or content to style tag

[kud]

Ooooooooh, okay. Thank you!