Skip to main content

API reference Examples Services

⌘K

↑↓Up or down tonavigate↵Enter toselectESCEscape toclose⌘⇧KToggle AIAI

Deno APIs
Web APIs
Node APIs

Cache
Canvas
Crypto
Encoding
Events
Fetch
File
GPU
I/O
Intl
Messaging
Performance
Platform
Storage
Streams
Temporal
URL
Wasm
WebSockets
Workers
Uncategorized
View all 481 symbols

Web

Streams

UnderlyingDefaultSource

.

type

property UnderlyingDefaultSource.type

Type #

undefined

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.