Figma's tech is mindblowing. Their entire engine is custom-built in C++ : https://www.figma.com/blog/building-a-professional-design-tool-on-the-web/ https://www

Figma's tech is mindblowing. Their entire engine is custom-built in C++ : https://www.figma.com/blog/building-a-professional-design-tool-on-the-web/ https://www.figma.com/blog/building-a-professional-design-to... > Instead of attempting to get one of [HTML/SVG/JS Canvas] to work, we implemented everything from scratch using WebGL. Our renderer is a highly-optimized tile-based engine with support for masking, blurring, dithered gradients, blend modes, nested layer opacity, and more. All rendering is done on the GPU and is fully anti-aliased. Internally our code looks a lot like a browser inside a browser; we have our own DOM, our own compositor, our own text layout engine, and we’re thinking about adding a render tree just like the one browsers use to render HTML. To most people, esbuild would be a full-time job. Based on the above, it seems that to Evan it's a fraction of the work he did in Figma's early days all at once!