Sass Blog

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The Module System is Launched

Posted 2 October 2019 by Natalie Weizenbaum

The Sass team has known for years that the @import rule, one of the earliest additions to Sass, wasn’t as good as we wanted it. It caused a litany of problems for our users:

  • It was next to impossible to figure out where a given variable, mixin, or function (collectively called “members”) was originally defined, since anything defined in one stylesheet was available to all stylesheets that were imported after it.

  • Even if you chose to explicitly import every stylesheet that defined members you used, you’d end up with duplicate CSS and strange side-effects, because stylesheets were reloaded from scratch every time they were imported.

  • It wasn’t safe to use terse and simple names because there was always a possibility that some other stylesheet elsewhere in your application would use the same name and mess up your logic. To be safe users had to manually add long, awkward namespaces to everything they defined.

  • Library authors had no way to ensure that their private helpers wouldn’t be accessed…

Module System Preview

Posted 4 September 2019 by Natalie Weizenbaum

Exciting news, Sass fans! After a year of development and some iteration on the spec, we’re ready to launch a beta preview of the new Sass module system! We may still make a few last-minute tweaks based on user feedback, so don’t go using itin production just yet, but please do take this opportunity to play around with it and let us know what you think.

Installing the Preview

The preview release is available on all the normal distribution channels as version 1.23.0-module.beta.1. You can download it from the GitHub release page, or install it using one of the following commands (depending on your preferred installation channel):

$ npm install --save-dev sass@1.23.0-module.beta.1

$ npm install -g sass@1.23.0-module.beta.1

$ brew install sass/sass/sass@1.23.0-module.beta.1

$ choco install sass --version 1.23.0.modulebeta-1

$ pub global activate sass 1.23.0-module.beta.1

Note that 1.23.0 may not actually be the final version number for the stable module system release, it’s just…

Request For Comments: Forward Slash as Separator

Posted 7 May 2019 by Natalie Weizenbaum

Early on in Sass’s history, the decision was made to use / as a division operator, since that was (and is) by far the most common representation across programming languages. The / character was used in very few plain CSS properties, and for those it was an optional shorthand. So Sass defined a set of heuristics that defined when / would be rendered as a literal slash versus treated as an operator.

For a long time, these heuristics worked pretty well. In recent years, however, new additions to CSS such as CSS Grid and CSS Color Level 4 have been using / as a separator increasingly often. Using the same character for both division and slash-separation is becoming more and more annoying to users, and will likely eventually become untenable.

As such, we’re planning to redefine / to be only a separator. Rather than creating an unquoted string (as it currently does when at least one operand isn’t a number), it will create a list with a new slash separator. For example, 1 / 2 / 3 will be…

Brand New Sass Docs

Posted 23 April 2019 by Natalie Weizenbaum

I’m excited to announce the launch of a full rewrite and redesign of the Sass documentation, going live today after eight months of work by Jina Anne and myself! Jina, the lead of Team Sass Design, is responsible for the layout and visual design of the new documentation. She made everything gorgeous and readable. I wrote all the text, so if you see a typo I’m the one to blame.

A preview of the function documentation page.

In addition to reorganizing and rewriting all the documentation, we’ve added a special example widget that makes it easy to see how Sass stylesheets translate into CSS. It has tabs for both SCSS and the indented syntax, so you can use whichever you prefer, or switch between them to see the difference.

The example widget.

The Sass function documentation is included in the rewrite. Functions are now organized into easy-to-understand sections, and Jina designed a super readable layout for them.

The round() function.

Best of all, the new documentation has full-text search courtesy of our friends at Algolia. You can search for features, function names…

Ruby Sass Has Reached End-Of-Life

Posted 4 April 2019 by Natalie Weizenbaum

One year has passed since we announced the deprecation of Ruby Sass, and it has now officially reached its end-of-life. We will release one final version of the Ruby Sass gem that will print a warning indicating that it’s no longer receiving updates, and then archive the GitHub repository.

A woman saying "Goodbye, my friend"

We will then merge the sass/language repo into the sass/sass repo. This means that anyone still depending on Ruby Sass from github.com/sass/sass will break. Going forward, the sass/sass repo will be the location for working on the language specs, and will not contain any code. The sass/language repo will just include links pointing to sass/sass.

Migrating Away

If you haven’t migrated away from Ruby Sass yet, now is the time. The best way to do that depends on how you use Ruby Sass today.

If you use Ruby Sass as a command-line tool, the easiest way to migrate is to install Dart Sass as a command-line tool. It supports a similar interface to Ruby Sass, and you can run sass --help for a full explanation…

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