Mirrow

A design-first language for living SVGs.

Mirrow is a playground and production tooling for vector animators working with integrating motion, and interaction seemlessly into their workflow. Instead of treating SVGs as static assets, Mirrow gives them the starring role in your workflow. Describe shapes, styling, animation, and even interaction logic in one expressive format that compiles seamlessly.

• SVGs are treated as first-class citizens rather than static assets.
• A familiar, designer-friendly syntax.
• Animation, state, and styling live together.
• Output slots into your applications for a seemless adoption.

svg {
  size: (150, 150)

  rect {
    at: (20, 20)
    size: (100px, 100px)  // px string now validated
    radius: (8, 8)
    stroke: #333
    strokeWidth: 2
    id: "box"
  }

  @hover {
    #box { stroke: #0070f3; strokeWidth: 3 }
  }
}

# Compile a Mirrow file to SVG without installing anything locally
npx mirrow -i icon.mirrow -o icon.svg

# Mirror an entire directory of Mirrow sources into a build output
npx mirrow -i src/mirrow -o dist/icons --depth unbound

The CLI reads the Mirrow source at icon.mirrow and writes the compiled SVG to icon.svg. Point the -o flag at your framework adapter (React, Svelte, etc.) to generate components instead of raw SVG. When a directory is supplied via -i, Mirrow preserves the directory structure, compiling every .mirrow file to .svg and copying any other assets alongside them. Control how deep the recursion goes with --depth (use unbound to traverse every nested folder).

The project is organized as a monorepo:

• @mirrowjs/core – the Mirrow compiler, parser, and language experiments.
• @mirrow/cli – a lightweight CLI that will grow alongside the language.

If you have a feature request or feedback from using Mirrow, feel free to open an issue and share your thoughts 💡