Deno Standard Library (@std)

The Deno standard library is published as a set of modular JSR packages under the @std scope.

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@std/assert – Common assertion functions, especially useful for testing
@std/async – Utilities for asynchronous operations, like delays, debouncing, or pooling
@std/bytes – Utilities to manipulate Uint8Arrays that are not built-in to JavaScript
@std/cache – UNSTABLE: Cache utilities
@std/cbor – UNSTABLE: Utilities for parsing and serializing Concise Binary Object Representation (CBOR)
@std/cli – Tools for creating interactive command line tools
@std/collections – Pure functions for common tasks related to collection types like arrays and objects
@std/crypto – Extensions to the Web Crypto API
@std/csv – Reading and writing of comma-separated values (CSV) files
@std/data-structures – Common data structures like red-black trees and binary heaps
@std/datetime – UNSTABLE: Utilities for dealing with Date objects
@std/dotenv – UNSTABLE: Parsing and loading environment variables from a .env file
@std/encoding – Utilities for encoding and decoding common formats like hex, base64, and varint
@std/expect – Jest compatible expect assertion functions
@std/fmt – Utilities for formatting values, such as adding colors to text, formatting durations, printf utils, formatting byte numbers.
@std/front-matter – Extract front matter from strings
@std/fs – Helpers for working with the file system
@std/html – Functions for HTML, such as escaping or unescaping HTML entities
@std/http – Utilities for building HTTP servers
@std/ini – UNSTABLE: Parsing and serializing of INI files
@std/internal – INTERNAL: The internal package for @std. Do not use this directly.
@std/io – UNSTABLE: The utilities for advanced I/O operations using Reader and Writer interfaces.
@std/json – (Streaming) parsing and serializing of JSON files
@std/jsonc – Parsing and serializing of JSONC files
@std/log – UNSTABLE: A customizable logger framework
@std/math – Basic math utilities
@std/media-types – Utility functions for media types (MIME types)
@std/msgpack – Encoding and decoding for the msgpack format
@std/net – Utilities for working with the network
@std/path – Utilities for working with file system paths
@std/random – UNSTABLE: Various utilities using random number generators. The package also provides seeded pseudo-random number generator.
@std/regexp – Utilities for working with RegExp
@std/semver – Parsing and comparing of semantic versions (SemVer)
@std/streams – Utilities for working with the Web Streams API
@std/tar – UNSTABLE: Streaming utilities for working with tar archives.
@std/testing – Tools for testing Deno code like snapshot testing, bdd testing, and time mocking
@std/text – Utilities for working with text
@std/toml – Parsing and serializing of TOML files
@std/ulid – Generation of Universally Unique Lexicographically Sortable Identifiers (ULIDs)
@std/uuid – Generators and validators for UUIDs
@std/webgpu – UNSTABLE: Utilities for working with the Web GPU API
@std/xml – XML parsing and serialization for Deno.
@std/yaml – Parsing and serializing of YAML files

This index and the individual package overview sections are generated. Add extra examples by creating files in _overrides/<package>.md.

Deno Standard Library (@std)

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