Opal Compiler

JSON →
library 3.0.0 ·javascript
verified May 1, 2026

Transpile Ruby code to JavaScript in Node.js using the Opal Ruby-to-JS compiler. Current stable version 3.0.0 is based on Opal 1.7.3 and requires Node >=16. Release cadence is irregular. Unlike browser-focused Opal builds, this package provides a Node-native API (Builder) to compile Ruby files programmatically. Key differentiator: direct Node.js integration with no separate runtime required, supporting modern ESM patterns in v3.

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