CSS URL Rewrite and CSS Asset Copier

[sormy]

General Goal: CSS URL Rewrite and CSS Asset Copier

Example:

• URL to all assets should be rewritten to load them correctly
• bundle operation should copy assets into destination folder

import 'font-awesome/scss/font-awesome.scss';
import 'open-sans/open-sans.scss';

Fixes:

• modernizer removed, detection of Worker could be easier with one line window.Worker
• css url rewrite
• css asset copier
• separate css option
• build css option
• pass autoprefixer options
• refactoring
• fix lining
• unify css injector
• readme fixes
• minify based on bundler options

[screendriver]

Could you please make tests for the newly added features?

By the way: thank you! Great work 👍 😎

[sormy]

• css url rewriter and css asset copier are covered by unit tests in their repos
• for functional tests I fixed tests which you already have here

Let me know if I need to cover something else by tests.