segmentio/myth

Health v2 · maintenance only

Flags: no_releases archived no_license

Adoption not part of the score

4287 stars · 125 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Myth is a CSS preprocessor built on Rework that lets you write pure, spec-compliant CSS with future syntax (variables, custom media queries, color functions) and compiles it to browser-compatible CSS today. It works both as a CLI and as a JavaScript API, and can re-process existing CSS from other tools.

Use cases

• compile future CSS syntax to browser-compatible CSS today
• use CSS variables and custom media queries before browsers support them
• autoprefix and add vendor fallbacks to plain CSS
• re-process CSS output from Sass or Less without rewriting it
• write pure CSS while getting preprocessor-like features

When to choose

• you want to write spec-compliant CSS that stays future-proof
• you need a lightweight CSS transformer with a simple CLI or JS API
• you want to add browser support to existing CSS without changing syntax

When to avoid

• you need a full-featured preprocessor with mixins, nesting, and imports like Sass
• you need actively maintained tooling - the project has seen little activity and PostCSS is the modern standard
• you need runtime CSS calculations or complex build integrations

Facets

library · maturity maintenance

css-framework build-tool cli web-development frontend web-design developer-tools cli cross-platform css-preprocessor postprocessor css-polyfill rework autoprefixing css-variables custom-media-queries nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="segmentio/myth")