Configuration language (DSL) to assemble visualizations

Declarative data visualization is an active area of research, and there&#x27;s a lot of cool projects in this space. Take a look at Vega-Lite [0] and Voyager [1].<p>[0] <a href="https:&#x2F;&#x2F;vega.github.io&#x2F;vega-lite&#x2F;" rel="nofollow">https:&#x2F;&#x2F;vega.github.io&#x2F;vega-lite&#x2F;</a><p>[1] <a href="https:&#x2F;&#x2F;vega.github.io&#x2F;voyager&#x2F;" rel="nofollow">https:&#x2F;&#x2F;vega.github.io&#x2F;voyager&#x2F;</a>

I like the general idea, but when I look at this implementation is seems like it lacks basic facilities for abstraction. E.g. naming values. This reminds me of CSS, which similarly suffers from such a lack of abstraction and is slowly gaining such features. Cf Less, Sass, and other CSS preprocessors which provide more facilities for abstraction.

Doesn&#x27;t work for me, console shows CORS errors. Anybody else see the same?