Transforms:

:local(.continueButton) {
  composes: button from "library/button.css";
  color: green;
}

into:

:import("library/button.css") {
  button: __tmp_487387465fczSDGHSABb;
}
:local(.continueButton) {
  composes: __tmp_487387465fczSDGHSABb;
  color: green;
}

• Only a certain whitelist of properties are inspected. Currently, that whitelist is ['composes'] alone.
• An extend-import has the following format:

composes: className [... className] from "path/to/file.css";

npm install
npm build
npm test

• Lines:
• Statements:

• npm watch will watch src for changes and rebuild
• npm autotest will watch src and test for changes and retest

ISC

• Mark Dalgleish
• Tobias Koppers
• Guy Bedford

Glen Maddern, 2015.