Skip to main content

API reference Examples Services

Deno APIs

Deno specific APIs
All symbols
Deno APIs by category

Web APIs

Web Platform Support
All symbols
Web APIs by category

Node APIs

Node support in deno
All symbols
Node APIs by namespace

Deno

.

.

.

optional

property Deno.lint.ArrayPattern.optional

Type #

boolean

Type

Deno Docs

Deno Runtime
Examples
Standard Library
Deno API Reference

Services Docs

Deno Deploy ^EA
Deno Deploy Classic
Deno Subhosting

Community

Discord
GitHub
YouTube
Bluesky
Mastodon
Twitter
Newsletter

Help & Feedback

Community Support
Deploy System Status
Deploy Feedback
Report a Problem

Company

Deno Website
Blog
Careers
Merch
Privacy Policy

Copyright © 2025 the Deno authors.