Bun 1.3
With Bun 1.3, the platform takes a bold step toward becoming a full-stack JavaScript runtime by bundling frontend and backend tooling under one roof. Now you can serve HTML directly, run a dev server with hot module reloading, and benefit from integrated routing, cookie APIs, and WebSocket improvements. On the database side, Bun introduces a unified Bun.SQL interface supporting PostgreSQL, MySQL/MariaDB, and SQLite, while also offering a built-in Redis client (faster than ioredis for many workloads). Among its many enhancements are isolated installs by default (to prevent accidental dependency leakage), catalogs for monorepo version centralization, and a Security Scanner API that flags vulnerabilities during package installs. Finally, Bun 1.3 introduces stronger security features, including Bun.secrets for OS-level credential storage and a built-in CSRF protection API, enhancing the runtime’s safety out of the box.
