@std

Common assertion functions, especially useful for testing

Utilities for asynchronous operations, like delays, debouncing, or pooling

Utilities to manipulate Uint8Arrays that are not built-in to JavaScript

UNSTABLE: Cache utilities

UNSTABLE: Utilities for parsing and serializing Concise Binary Object Representation (CBOR)

Tools for creating interactive command line tools

Pure functions for common tasks related to collection types like arrays and objects

Extensions to the Web Crypto API

Reading and writing of comma-separated values (CSV) files

Common data structures like red-black trees and binary heaps

UNSTABLE: Utilities for dealing with Date objects

UNSTABLE: Parsing and loading environment variables from a `.env` file

Utilities for encoding and decoding common formats like hex, base64, and varint

Jest compatible `expect` assertion functions

Utilities for formatting values, such as adding colors to text, formatting durations, printf utils, formatting byte numbers.

Extract front matter from strings

Helpers for working with the file system

Functions for HTML, such as escaping or unescaping HTML entities

Utilities for building HTTP servers

UNSTABLE: Parsing and serializing of INI files

INTERNAL: The internal package for @std. Do not use this directly.

UNSTABLE: The utilities for advanced I/O operations using Reader and Writer interfaces.

(Streaming) parsing and serializing of JSON files

Parsing and serializing of JSONC files

UNSTABLE: A customizable logger framework

Utility functions for media types (MIME types)

Encoding and decoding for the msgpack format

Utilities for working with the network

Utilities for working with file system paths

UNSTABLE: Various utilities using random number generators. The package also provides seeded pseudo-random number generator.

Utilities for working with RegExp

Parsing and comparing of semantic versions (SemVer)

Utilities for working with the Web Streams API

UNSTABLE: Streaming utilities for working with tar archives.

Tools for testing Deno code like snapshot testing, bdd testing, and time mocking

Utilities for working with text

Parsing and serializing of TOML files

Generation of Universally Unique Lexicographically Sortable Identifiers (ULIDs)

Generators and validators for UUIDs

UNSTABLE: Utilities for working with the Web GPU API

Parsing and serializing of YAML files