Exports

Blob class is a global reference for import { Blob } from 'node:buffer' https://nodejs.org/api/buffer.html#class-blob

@since v18.0.0

BroadcastChannel class is a global reference for import { BroadcastChannel } from 'worker_threads' https://nodejs.org/api/globals.html#broadcastchannel

@since v18.0.0

ByteLengthQueuingStrategy class is a global reference for import { ByteLengthQueuingStrategy } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-bytelengthqueuingstrategy

@since v18.0.0

CountQueuingStrategy class is a global reference for import { CountQueuingStrategy } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-countqueuingstrategy

@since v18.0.0

File class is a global reference for import { File } from 'node:buffer' https://nodejs.org/api/buffer.html#class-file

@since v20.0.0

MessageChannel class is a global reference for import { MessageChannel } from 'worker_threads' https://nodejs.org/api/globals.html#messagechannel

@since v15.0.0

MessagePort class is a global reference for import { MessagePort } from 'worker_threads' https://nodejs.org/api/globals.html#messageport

@since v15.0.0

PerformanceEntry is a global reference for import { PerformanceEntry } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performanceentry

PerformanceMark is a global reference for import { PerformanceMark } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performancemark

PerformanceMeasure is a global reference for import { PerformanceMeasure } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performancemeasure

PerformanceObserver is a global reference for import { PerformanceObserver } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performanceobserver

PerformanceObserverEntryList is a global reference for import { PerformanceObserverEntryList } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performanceobserverentrylist

PerformanceResourceTiming is a global reference for import { PerformanceResourceTiming } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performanceresourcetiming

ReadableByteStreamController class is a global reference for import { ReadableByteStreamController } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablebytestreamcontroller

@since v18.0.0

ReadableStream class is a global reference for import { ReadableStream } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablestream

@since v18.0.0

ReadableStreamBYOBReader class is a global reference for import { ReadableStreamBYOBReader } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablestreambyobreader

@since v18.0.0

ReadableStreamBYOBRequest class is a global reference for import { ReadableStreamBYOBRequest } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablestreambyobrequest

@since v18.0.0

ReadableStreamDefaultController class is a global reference for import { ReadableStreamDefaultController } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablestreamdefaultcontroller

@since v18.0.0

ReadableStreamDefaultReader class is a global reference for import { ReadableStreamDefaultReader } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-readablestreamdefaultreader

@since v18.0.0

TextDecoder class is a global reference for import { TextDecoder } from 'node:util' https://nodejs.org/api/globals.html#textdecoder

@since v11.0.0

TextDecoderStream class is a global reference for import { TextDecoderStream } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-textdecoderstream

@since v18.0.0

TextEncoder class is a global reference for import { TextEncoder } from 'node:util' https://nodejs.org/api/globals.html#textencoder

@since v11.0.0

TextEncoderStream class is a global reference for import { TextEncoderStream } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-textencoderstream

@since v18.0.0

TransformStream class is a global reference for import { TransformStream } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-transformstream

@since v18.0.0

TransformStreamDefaultController class is a global reference for import { TransformStreamDefaultController } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-transformstreamdefaultcontroller

@since v18.0.0

URL class is a global reference for import { URL } from 'url' https://nodejs.org/api/url.html#the-whatwg-url-api

@since v10.0.0

URLSearchParams class is a global reference for import { URLSearchParams } from 'node:url' https://nodejs.org/api/url.html#class-urlsearchparams

@since v10.0.0

WritableStream class is a global reference for import { WritableStream } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-writablestream

@since v18.0.0

WritableStreamDefaultController class is a global reference for import { WritableStreamDefaultController } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-writablestreamdefaultcontroller

@since v18.0.0

WritableStreamDefaultWriter class is a global reference for import { WritableStreamDefaultWriter } from 'node:stream/web'. https://nodejs.org/api/globals.html#class-writablestreamdefaultwriter

@since v18.0.0

The directory name of the current module. This is the same as the path.dirname() of the __filename.

@since v0.1.27

The file name of the current module. This is the current module file's absolute path with symlinks resolved.

For a main program this is not necessarily the same as the file name used in the command line.

@since v0.0.1

The console module provides a simple debugging console that is similar to the JavaScript console mechanism provided by web browsers.

The module exports two specific components:

• A Console class with methods such as console.log(), console.error() and console.warn() that can be used to write to any Node.js stream.
• A global console instance configured to write to process.stdout and process.stderr. The global console can be used without importing the node:console module.

Warning: The global console object's methods are neither consistently synchronous like the browser APIs they resemble, nor are they consistently asynchronous like all other Node.js streams. See the note on process I/O for more information.

Example using the global console:

console.log('hello world');
// Prints: hello world, to stdout
console.log('hello %s', 'world');
// Prints: hello world, to stdout
console.error(new Error('Whoops, something bad happened'));
// Prints error message and stack trace to stderr:
//   Error: Whoops, something bad happened
//     at [eval]:5:15
//     at Script.runInThisContext (node:vm:132:18)
//     at Object.runInThisContext (node:vm:309:38)
//     at node:internal/process/execution:77:19
//     at [eval]-wrapper:6:22
//     at evalScript (node:internal/process/execution:76:60)
//     at node:internal/main/eval_string:23:3

const name = 'Will Robinson';
console.warn(`Danger ${name}! Danger!`);
// Prints: Danger Will Robinson! Danger!, to stderr

Example using the Console class:

const out = getStreamSomehow();
const err = getStreamSomehow();
const myConsole = new console.Console(out, err);

myConsole.log('hello world');
// Prints: hello world, to out
myConsole.log('hello %s', 'world');
// Prints: hello world, to out
myConsole.error(new Error('Whoops, something bad happened'));
// Prints: [Error: Whoops, something bad happened], to err

const name = 'Will Robinson';
myConsole.warn(`Danger ${name}! Danger!`);
// Prints: Danger Will Robinson! Danger!, to err

@see source

The exports variable is available within a module's file-level scope, and is assigned the value of module.exports before the module is evaluated.

@since v0.1.16

Enable this API with the --expose-gc CLI flag.

A reference to the current module.

@since v0.1.16

performance is a global reference for import { performance } from 'node:perf_hooks'

@see https://nodejs.org/docs/latest-v22.x/api/globals.html#performance

@since v0.1.13

Schedules the "immediate" execution of the callback after I/O events' callbacks.

When multiple calls to setImmediate() are made, the callback functions are queued for execution in the order in which they are created. The entire callback queue is processed every event loop iteration. If an immediate timer is queued from inside an executing callback, that timer will not be triggered until the next event loop iteration.

If callback is not a function, a TypeError will be thrown.

This method has a custom variant for promises that is available using timersPromises.setImmediate().

@since v0.9.1

Returns. for use with clearImmediate()

Schedules execution of a one-time callback after delay milliseconds.

The callback will likely not be invoked in precisely delay milliseconds. Node.js makes no guarantees about the exact timing of when callbacks will fire, nor of their ordering. The callback will be called as close as possible to the time specified.

When delay is larger than 2147483647 or less than 1 or NaN, the delay will be set to 1. Non-integer delays are truncated to an integer.

If callback is not a function, a TypeError will be thrown.

This method has a custom variant for promises that is available using timersPromises.setTimeout().

@since v0.0.1

Returns. for use with clearTimeout()

Decodes a string of Base64-encoded data into bytes, and encodes those bytes into a string using Latin-1 (ISO-8859-1).

The data may be any JavaScript-value that can be coerced into a string.

This function is only provided for compatibility with legacy web platform APIsand should never be used in new code, because they use strings to representbinary data and predate the introduction of typed arrays in JavaScript.For code running using Node.js APIs, converting between base64-encoded stringsand binary data should be performed using Buffer.from(str, 'base64') and buf.toString('base64').

@since v15.13.0, v14.17.0

Decodes a string into bytes using Latin-1 (ISO-8859), and encodes those bytes into a string using Base64.

The data may be any JavaScript-value that can be coerced into a string.

This function is only provided for compatibility with legacy web platform APIsand should never be used in new code, because they use strings to representbinary data and predate the introduction of typed arrays in JavaScript.For code running using Node.js APIs, converting between base64-encoded stringsand binary data should be performed using Buffer.from(str, 'base64') and buf.toString('base64').

@since v15.13.0, v14.17.0

Cancels an Immediate object created by setImmediate().

@since v0.9.1

Cancels a Timeout object created by setInterval().

@since v0.0.1

Cancels a Timeout object created by setTimeout().

@since v0.0.1

The queueMicrotask() method queues a microtask to invoke callback. If callback throws an exception, the process object 'uncaughtException' event will be emitted.

The microtask queue is managed by V8 and may be used in a similar manner to the process.nextTick() queue, which is managed by Node.js. The process.nextTick() queue is always processed before the microtask queue within each turn of the Node.js event loop.

@since v11.0.0

Schedules repeated execution of callback every delay milliseconds.

When delay is larger than 2147483647 or less than 1 or NaN, the delay will be set to 1. Non-integer delays are truncated to an integer.

If callback is not a function, a TypeError will be thrown.

This method has a custom variant for promises that is available using timersPromises.setInterval().

@since v0.0.1

Returns. for use with clearInterval()

Schedules repeated execution of callback every delay milliseconds.

When delay is larger than 2147483647 or less than 1 or NaN, the delay will be set to 1. Non-integer delays are truncated to an integer.

If callback is not a function, a TypeError will be thrown.

This method has a custom variant for promises that is available using timersPromises.setInterval().

@since v0.0.1

Returns. for use with clearInterval()