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

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

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

.aa {
  composes: b from "./b.css";
  composes: c from "./c.css";
}

.bb {
  /* "b.css" should be before "c.css" in this case */
  composes: c from "./c.css";
  composes: b from "./b.css";
}

npm install
npm test