Not quite; it's intended only to replace webpack for development. Snowpack explicitly recommends you continue using bundlers for production.
"Snowpack treats bundling as a final, production-only build optimization. By bundling as the final step, you avoid mixing build logic and bundle logic in the same huge configuration file. Instead, your bundler gets already-built files and can focus solely on what it does best: bundling."
"Snowpack treats bundling as a final, production-only build optimization. By bundling as the final step, you avoid mixing build logic and bundle logic in the same huge configuration file. Instead, your bundler gets already-built files and can focus solely on what it does best: bundling."