Веб-стандарты - Sass переписали на Dart, вышла первая альфа в 5—10 раз быстрее версии на Ruby, но пока медленнее LibSass на C++ http://blog.sass -lang.com/posts/1022316-announcing-dart-sass | Facebook
![lib-sass compat: inspect("abc") == "abc" should be true but is false · Issue #594 · sass/dart-sass · GitHub lib-sass compat: inspect("abc") == "abc" should be true but is false · Issue #594 · sass/dart-sass · GitHub](https://user-images.githubusercontent.com/1569131/52718104-956e1780-2f9a-11e9-96c7-62a8573f45f0.png)
lib-sass compat: inspect("abc") == "abc" should be true but is false · Issue #594 · sass/dart-sass · GitHub
![Introducing Dart Sass: A Practical Introduction to the Replacement for Sass, Built on Dart | SpringerLink Introducing Dart Sass: A Practical Introduction to the Replacement for Sass, Built on Dart | SpringerLink](https://media.springernature.com/w153/springer-static/cover/book/978-1-4842-4372-5.jpg)