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Deno is the secure JavaScript and TypeScript runtime from Node.js creator Ryan Dahl, with built-in TypeScript, permission-based sandboxing, and full npm compatibility since Deno 2. We rate it 83/100 — a strong pick for TypeScript-first teams.
Deno is a modern, secure runtime for JavaScript and TypeScript created by Ryan Dahl — the same engineer who built Node.js — with batteries-included tooling, a permission-based security model, and full npm compatibility since Deno 2. We rate it 83/100 — the right pick for TypeScript-first teams who want a single binary that handles linting, testing, formatting, package management, and deployment without a wall of devDependencies.
Deno is an open-source JavaScript and TypeScript runtime built on V8, Rust, and Tokio. It was first announced by Ryan Dahl at JSConf EU 2018 in his now-famous talk "10 Things I Regret About Node.js," reached Deno 1.0 on , and is developed today by Deno Land Inc., the company Dahl and co-founder Bert Belder incorporated on in San Francisco. The runtime crossed 100,000 GitHub stars in 2025 and shipped its current major release line, Deno 2, in , with Deno 2.7 landing in .
The specific problem Deno solves is the accumulated weight of the Node.js ecosystem: a runtime that pre-dates promises, a module system without sandboxing, and a tool chain that requires bolting on TypeScript, ESLint, Prettier, Vitest, and a package manager just to start a project. Deno ships every one of those concerns in a single 100MB binary, runs TypeScript without a build step, and refuses to read your home directory unless you pass --allow-read.
--allow-read, --allow-net, or the new fine-grained --allow-read=./data. This is genuinely innovative — Node.js only added an experimental permission model in 2024 and it is still less granular than Deno's..ts files directly with no tsc, no build step, no ts-node shim. Deno 2.6 added tsgo, a Go-rewritten type checker that is roughly 10× faster than the legacy TypeScript implementation on large codebases.import express from "npm:express" and Deno will resolve, cache, and run the package using a node_modules-compatible layout when needed — or skip node_modules entirely with the global cache.deno test), formatter (deno fmt), linter (deno lint), bundler, documentation generator, dependency auditor (deno audit), and benchmark tool. No package.json required.Date object. Chrome 144 shipped it in January 2026; Deno followed within weeks.deno dx, an npx-compatible binary runner that resolves and executes package binaries without a global install — faster than npx and with permissions still enforced.
On Hacker News, Deno's recurring praise is the developer experience: "TypeScript just works," the standard library is well-curated, and shipping a single binary for CI is a relief after years of Node version managers. The recurring criticism is that Bun is faster on raw HTTP throughput — in 2026 benchmarks Bun hits roughly 52,000 req/sec versus Deno's 29,000 req/sec on the same hardware, though Deno still beats Node.js (14,000 req/sec) by roughly 2×. On Reddit's r/node, the migration stories from Node to Deno consistently call out npm-compatibility-as-of-Deno-2 as the unblocker that finally made adoption realistic; the lingering complaint is that some native Node modules with C++ bindings still fail to load. Production users include Slack, Netlify, The Guardian, and Plaid, alongside the Deno-built marketplace JSR registry that now hosts thousands of TypeScript-native packages.
The Deno runtime itself is free and MIT-licensed. Pricing applies only to Deno Deploy, the optional managed edge platform.
| Plan | Price | Key Limits |
|---|---|---|
| Open Source CLI | $0 | Unlimited — Deno runtime is free forever |
| Deploy Free | $0/month | 1M requests/month, 100GB egress, 15 CPU-hours, KV included |
| Deploy Pro | $20/month | 5M requests, 200GB egress, 40 CPU-hours, custom domains, team seats |
| Deploy Builder | $200/month | 20M requests, 300GB egress, priority support, expanded quotas |
| Enterprise | Custom | SSO, SOC 2, dedicated regions, Subhosting, contractual SLAs |
Best for: TypeScript-first teams building modern web services, edge functions, and CLI tools who value built-in security and a coherent tool chain. Especially compelling for greenfield projects, serverless workloads on Deno Deploy, and teams that have outgrown the maintenance cost of a Node + tsc + ESLint + Prettier + Vitest stack.
Not ideal for: Workloads that depend on niche native Node modules with custom C++ bindings, teams entirely committed to Express middleware ecosystems, or shops chasing the absolute fastest HTTP throughput — Bun still wins those benchmarks.
Pros:
Cons:
require tricks still trip the runtime.The two main alternatives are Bun — a Zig-built runtime with the fastest HTTP throughput and the best bun install performance, but a younger security model — and Node.js itself, which in versions 22 and 24 has caught up on native TypeScript support and added permissions, but still requires assembling its own tool chain. For pure edge serverless, Cloudflare Workers offers a more aggressive cold-start profile but a smaller runtime API surface.
Deno earns an 83/100 — a clearly very good runtime with a small set of recurring rough edges. Adopt it if you are starting a new TypeScript project, deploying to the edge, or tired of maintaining a separate package manager, type checker, linter, formatter, and test runner per repository. Stick with Node.js if you have a deep dependency on its native module ecosystem, and pick Bun if raw HTTP throughput is the binding constraint.
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