Deno runs JavaScript and TypeScript with security by default. Explicit permissions control system access. URL imports eliminate package.json. Built-in tooling includes formatter, linter, and test runner.
Security Model
No file, network, or environment access by default. Grant permissions explicitly via flags. Fine-grained control over allowed resources. Sandboxing prevents unexpected access.
- Grant only necessary permissions
- Use URL imports for dependencies
- Leverage built-in TypeScript support
- Use Deno.test for native testing
- Deploy with Deno Deploy for edge hosting
Ecosystem
deno.land hosts standard library and third-party modules. npm compatibility layer enables Node package use. Fresh framework provides full-stack web development. Deno Deploy hosts at the edge.