Globals

Bun implements the following globals.

Global	Source	Notes
`AbortController`	Web
`AbortSignal`	Web
`alert`	Web	Intended for command-line tools
`Blob`	Web
`Buffer`	Node.js	See Node.js > `Buffer`
`Bun`	Bun	Subject to change as additional APIs are added
`ByteLengthQueuingStrategy`	Web
`confirm`	Web	Intended for command-line tools
`__dirname`	Node.js
`__filename`	Node.js
`atob()`	Web
`btoa()`	Web
`BuildMessage`	Bun
`clearImmediate()`	Web
`clearInterval()`	Web
`clearTimeout()`	Web
`console`	Web
`CountQueuingStrategy`	Web
`Crypto`	Web
`crypto`	Web
`CryptoKey`	Web
`CustomEvent`	Web
`Event`	Web	Also `ErrorEvent` `CloseEvent` `MessageEvent`.
`EventTarget`	Web
`exports`	Node.js
`fetch`	Web
`FormData`	Web
`global`	Node.js	See Node.js > `global`.
`globalThis`	Cross-platform	Aliases to `global`
`Headers`	Web
`HTMLRewriter`	Cloudflare
`JSON`	Web
`MessageEvent`	Web
`module`	Node.js
`performance`	Web
`process`	Node.js	See Node.js > `process`
`prompt`	Web	Intended for command-line tools
`queueMicrotask()`	Web
`ReadableByteStreamController`	Web
`ReadableStream`	Web
`ReadableStreamDefaultController`	Web
`ReadableStreamDefaultReader`	Web
`reportError`	Web
`require()`	Node.js
`ResolveMessage`	Bun
`Response`	Web
`Request`	Web
`setImmediate()`	Web
`setInterval()`	Web
`setTimeout()`	Web
`ShadowRealm`	Web	Stage 3 proposal
`SubtleCrypto`	Web
`DOMException`	Web
`TextDecoder`	Web
`TextEncoder`	Web
`TransformStream`	Web
`TransformStreamDefaultController`	Web
`URL`	Web
`URLSearchParams`	Web
`WebAssembly`	Web
`WritableStream`	Web
`WritableStreamDefaultController`	Web
`WritableStreamDefaultWriter`	Web