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Manual
API reference
Examples
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Basics

What is Deno?
Run a script
Hello World
Built in TypeScript support
Your Deno Dev Environment
Initialize a project
Executable scripts
All-in-one tooling
Tasks and configuration with deno.json
Top level await
Update from CommonJS to ESM
Import and export functions
Interoperability with Node.js
Introduction to Deno APIs
Simple file server
Formatting with Deno fmt
Benchmarking with Deno bench
Generating documentation with deno doc

Modules and package management

Use Node.js' built-in modules
Import modules from npm
Compatibility with Node & npm
ECMAScript Modules
Publishing Modules with JSR

Web standard APIs

Browser APIs in Deno
Better debugging with the console API
Manipulating & parsing URLs
Fetch and stream data
Set timeout and intervals
Logging with colors
Web workers
Web assembly

Web frameworks and libraries

TypeScript and JSX
Build a React App
Build a Next.js app
Build a Fresh app
Build a Svelte app
Build a Vue app
Use Express with Deno
How to use Apollo with Deno
Build an Astro site with Deno
Build a Qwik app with Deno
Build a Nuxt app with Deno
Build a Typesafe API with tRPC and Deno
Build an API server with TypeScript
Build a Vue app
Build a SolidJS app
Build a React app
Build a Tanstack app
HTTP server file upload

Testing

Writing tests
Basics of testing
Mocking data in tests
Stubbing
Snapshot testing
Spy functions
Getting started with Deno test
Better testing with Deno coverage
Testing web applications
BDD testing

OpenTelemetry

Basic OpenTelemetry setup
Export telemetry to Grafana
Export telemetry to Hyperdx
Export telemetry to Honeycomb
Span propagation
OpenTelemetry with Deno Deploy

Deploying Deno projects

Deploy with Deno Deploy
AWS Lambda
Deploy Deno to AWS Lambda
AWS Lightsail
Cloudflare workers
Digital Ocean
Google Cloud Run
Kinsta
Deploying Deno with Docker

Connecting to Databases

Connecting to databases
Use MySQL2 with Deno
Use PlanetScale with Deno
Use Redis with Deno
Use Prisma with Deno
Use Drizzle with Deno
Mongoose and MongoDB
Connect to Redis
Connect to Postgres
Connect to Supabase
Connect to MongoDB
Connect to SQLite
Connect to Mongoose and MongoDB
Connect to Prisma
Connect to DuckDB

Encoding

Hex and base64 encoding
Parsing and serializing TOML
Importing JSON
Byte and text imports
Image bundling with deno compile
Parsing and serializing CSV
Parsing and serializing JSON
Parsing and serializing YAML
Manipulating byte arrays

CLI

Build a Command Line Utility
Input prompts
Permission management
Command line arguments
Getting the Deno version

Network

HTTP requests
HTTP Server: Hello world
HTTP server: Routing
HTTP server: Serving files
HTTP server: Streaming
HTTP server: CRUD with SQLite3
Hono HTTP server
HTTP server: WebSockets
Piping streams
Outbound WebSockets
TCP Echo Server
TCP connector: Ping
TCP listener: Ping
TCP/TLS connector: Ping
TCP/TLS listener: Ping
Running DNS queries

System

Handling OS signals
Benchmarking
Create a subprocess
Subprocess Spawning
Collecting output from subprocesses
Reading system metrics
Process information
Environment variables
Subprocesses: Spawning
Handle OS signals

FileSystem

Path operations
Reading files
Writing files
Deleting files
Checking for file existence
Moving/Renaming files
Creating & removing directories
Watching the filesystem
Walking directories
Unix cat
Creating & resolving symlinks
Temporary files & directories
Streaming file operations
Unzip gzipped file

Cryptography

Generating & validating UUIDs
ULID
Hashing
RSASSA-PKCS1-v1_5 Signature and Verification
HMAC Generation and Verification
AES Encryption and Decryption

Advanced

File system events
Module Metadata
File Based Routing
Build a chat app with WebSockets
Build a Realtime WebSocket Application
Build a word finder app
Connect to OpenAI - Chat completion
User Data Processing with Deno Collections
Exponential backoff

Unstable APIs

Deno KV watch
Deno Cron
Deno queues
Deno KV: Key/Value database
UDP listener: Ping
UDP connector: Ping
Temporal API
Importing text
Importing bytes

Connect to Mongoose and MongoDB

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