Humid 1.0 is a lightweight Ruby gem from Thoughtbot that enables React server-side rendering in Rails without a separate Node.js process. It uses mini_racer (an embedded V8 engine for Ruby) to render React components synchronously from Ruby. The setup requires fewer than 200 lines of code, includes instrumentation and telemetry, and is designed as a stepping stone toward Cloudflare V8 isolate deployments. Key caveats: no streaming or async data fetching during render, and mini_racer lacks browser globals like window and document.
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