# Deno

A modern runtime for JavaScript and TypeScript.

Repository: https://github.com/denoland/deno
Canonical: https://ross.abutalabs.com/products/deno
Homepage: https://deno.com
Language: Rust
License: MIT
License Family: permissive
Topics: deno, typescript, javascript, rust
Last push: 2026-08-26T16:42:05+00:00

## Health v2 (maintenance only)
Score: 94/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 84, longevity 100
- inputs: {"age_days": 3033, "days_push": 7, "days_rel": 27, "gap_med": 6.0, "n_releases_24m": 97}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 108312, forks 6353 (observed 2026-08-28T04:12:23.799758+00:00)

## What it is
Deno is a modern runtime for JavaScript, TypeScript, and WebAssembly built on V8, Rust, and Tokio, with secure defaults and first-class TypeScript support. It includes a standard library, built-in tooling (linting, formatting, testing), and is commonly used to build web servers and CLI tools.

## Use cases
- run typescript without a build step
- build a web server in typescript
- write command-line scripts in javascript
- run javascript with secure permissions
- execute webassembly modules
- replace node.js with a modern runtime

## When to choose
- you want built-in TypeScript support with no configuration
- you value secure-by-default permission model
- you want an all-in-one runtime with linting, formatting, and testing built in

## When to avoid
- you depend on a Node.js package ecosystem that requires native addons or CommonJS internals
- your team and tooling are deeply invested in Node.js

## Facets
- artifact type: application
- maturity: stable
- function: http-server, cli, interpreter, developer-tools, wasm
- domain: developer-tools, web-development, backend, programming-languages
- platform: windows, cross-platform, rust
- tags: javascript-runtime, typescript-runtime, v8, secure-defaults, webassembly, command-line, linux, macos, docker

## Member repositories
- denoland/deno (main) score 94
- denoland/rusty_v8 (backend) score 95
- denoland/deno_lint (plugin) score 91
- denoland/deno_install (infra) score 64
- denoland/deno_docker (infra) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:12:23.799758+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:12:09.880173+00:00, confidence not recorded.
  - readme: https://github.com/denoland/deno (fetched 2026-08-28T04:12:23.799758+00:00, sha 12512f33dd5c)
- Data as of 2026-08-30T08:39:29.467469+00:00.