Firefly Compiler

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library 0.6.19 ·javascript
verified May 1, 2026

A compile-to-JavaScript language with colorless async/await and type classes. Current stable version is 0.6.19, with frequent releases (multiple self-hosting milestones). Self-hosting compiler written in JavaScript compiles itself in ~1.2 seconds. Differentiators: colorless async (no explicit async/await markers), type classes (similar to Haskell), and self-hosting transpiler approach. Targets Node.js >=18. Active development with contributions from multiple developers.

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