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Deno provides a comprehensive set of CLI commands for running, testing, bundling, and managing your JavaScript and TypeScript projects.

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Execution Commands

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deno run

Run a JavaScript or TypeScript program, or execute a task from your configuration file. 
deno run main.ts
deno run --allow-net=google.com main.ts

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deno serve

Run a server with automatic port binding and request handling. 
deno serve main.ts

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deno task

Run a task defined in your deno.json configuration file. 
deno task dev

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deno repl

Start an interactive Read-Eval-Print Loop (REPL) for Deno. 
deno repl

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deno eval

Evaluate a script from the command line. 
deno eval "console.log('Hello, World!')"

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Testing & Benchmarking

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deno test

Run tests in your project. 
deno test
deno test --filter "my test"

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deno bench

Run benchmarks to measure code performance. 
deno bench
deno bench bench.ts

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Code Quality

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deno fmt

Format source files using the built-in code formatter. 
deno fmt
deno fmt main.ts

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deno lint

Lint source files for code quality issues. 
deno lint
deno lint --rules

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Bundling & Compilation

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deno bundle

Bundle your project into optimized JavaScript files. 
deno bundle main.ts
deno bundle --format esm main.ts bundle.js

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deno compile

Compile a script into a standalone executable. 
deno compile main.ts
deno compile --output myapp main.ts

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Documentation

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deno doc

Generate and show documentation for modules. 
deno doc
deno doc --json mod.ts
deno doc --html mod.ts

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Dependency Management

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deno add

Add dependencies to your project. 
deno add jsr:@std/assert
deno add npm:express

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deno install

Install dependencies or create a global executable. 
deno install
deno install --global --allow-net --allow-read https://deno.land/std/http/file_server.ts

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deno remove

Remove dependencies from your configuration file. 
deno remove @std/assert

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deno outdated

Find and update outdated dependencies. 
deno outdated

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Utility Commands

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deno check

Type-check the dependencies without running. 
deno check main.ts

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deno info

Show information about cache or source file. 
deno info
deno info main.ts

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deno cache

Cache dependencies. 
deno cache main.ts

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deno clean

Remove the cache directory. 
deno clean

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deno upgrade

Upgrade Deno to the latest or specified version. 
deno upgrade
deno upgrade 1.45.0
deno upgrade canary

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Global Flags

These flags are available for most commands:
  • --config <FILE> - Load configuration from a file
  • --no-config - Disable automatic config file detection
  • --import-map <FILE> - Load import map file
  • --lock <FILE> - Check the specified lock file
  • --no-lock - Disable lock file
  • --no-remote - Do not resolve remote modules
  • --reload - Reload source code cache
  • --unstable - Enable unstable features
  • --quiet - Suppress diagnostic output
  • --log-level <LEVEL> - Set log level (trace, debug, info)

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Permission Flags

Deno is secure by default. Use these flags to grant permissions:
  • --allow-all - Allow all permissions
  • --allow-env[=<VARIABLE>] - Allow environment access
  • --allow-read[=<PATH>] - Allow file system read access
  • --allow-write[=<PATH>] - Allow file system write access
  • --allow-net[=<DOMAIN>] - Allow network access
  • --allow-run[=<PROGRAM>] - Allow running subprocesses
  • --allow-sys[=<API>] - Allow access to system information
  • --allow-ffi[=<PATH>] - Allow loading dynamic libraries
Each permission flag also has a corresponding --deny-* variant for denying specific permissions.

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