# Deno Standard Library [![JSR @std](https://jsr.io/badges/@std)](https://jsr.io/@std) [![codecov](https://codecov.io/gh/denoland/deno_std/branch/main/graph/badge.svg?token=w6s3ODtULz)](https://codecov.io/gh/denoland/deno_std) [![ci](https://github.com/denoland/deno_std/actions/workflows/ci.yml/badge.svg)](https://github.com/denoland/deno_std/actions/workflows/ci.yml) High-quality APIs for [Deno](https://deno.com/) and the web. Use fearlessly. > [!NOTE] > Newer versions of the Standard Library are now hosted on > [JSR](https://jsr.io/@std). Older versions up till 0.224.0 are still available > at [deno.land/std](https://deno.land/std). ## Packages The following list contains links to the Standard Library's packages and documentation: | Package | Status | Latest version | | ------------------------------------------------------ | -------- | ----------------------------------------------------------------------------------------- | | [archive](https://jsr.io/@std/archive) | Unstable | [![JSR](https://jsr.io/badges/@std/archive)](https://jsr.io/@std/archive) | | [assert](https://jsr.io/@std/assert) | Settled | [![JSR](https://jsr.io/badges/@std/assert)](https://jsr.io/@std/assert) | | [async](https://jsr.io/@std/async) | Settled | [![JSR](https://jsr.io/badges/@std/async)](https://jsr.io/@std/async) | | [bytes](https://jsr.io/@std/bytes) | Settled | [![JSR](https://jsr.io/badges/@std/bytes)](https://jsr.io/@std/bytes) | | [cli](https://jsr.io/@std/cli) | Unstable | [![JSR](https://jsr.io/badges/@std/cli)](https://jsr.io/@std/cli) | | [collections](https://jsr.io/@std/collections) | Settled | [![JSR](https://jsr.io/badges/@std/collections)](https://jsr.io/@std/collections) | | [crypto](https://jsr.io/@std/crypto) | Settled | [![JSR](https://jsr.io/badges/@std/crypto)](https://jsr.io/@std/crypto) | | [csv](https://jsr.io/@std/csv) | Settled | [![JSR](https://jsr.io/badges/@std/csv)](https://jsr.io/@std/csv) | | [data_structures](https://jsr.io/@std/data_structures) | Unstable | [![JSR](https://jsr.io/badges/@std/data-structures)](https://jsr.io/@std/data-structures) | | [datetime](https://jsr.io/@std/datetime) | Unstable | [![JSR](https://jsr.io/badges/@std/datetime)](https://jsr.io/@std/datetime) | | [dotenv](https://jsr.io/@std/dotenv) | Unstable | [![JSR](https://jsr.io/badges/@std/dotenv)](https://jsr.io/@std/dotenv) | | [encoding](https://jsr.io/@std/encoding) | Settled | [![JSR](https://jsr.io/badges/@std/encoding)](https://jsr.io/@std/encoding) | | [expect](https://jsr.io/@std/expect) | Unstable | [![JSR](https://jsr.io/badges/@std/expect)](https://jsr.io/@std/expect) | | [fmt](https://jsr.io/@std/fmt) | Settled | [![JSR](https://jsr.io/badges/@std/fmt)](https://jsr.io/@std/fmt) | | [front_matter](https://jsr.io/@std/front-matter) | Settled | [![JSR](https://jsr.io/badges/@std/front-matter)](https://jsr.io/@std/front-matter) | | [fs](https://jsr.io/@std/fs) | Settled | [![JSR](https://jsr.io/badges/@std/fs)](https://jsr.io/@std/fs) | | [html](https://jsr.io/@std/html) | Unstable | [![JSR](https://jsr.io/badges/@std/html)](https://jsr.io/@std/html) | | [http](https://jsr.io/@std/http) | Unstable | [![JSR](https://jsr.io/badges/@std/http)](https://jsr.io/@std/http) | | [ini](https://jsr.io/@std/ini) | Unstable | [![JSR](https://jsr.io/badges/@std/ini)](https://jsr.io/@std/ini) | | [io](https://jsr.io/@std/io) | Unstable | [![JSR](https://jsr.io/badges/@std/io)](https://jsr.io/@std/io) | | [json](https://jsr.io/@std/json) | Settled | [![JSR](https://jsr.io/badges/@std/json)](https://jsr.io/@std/json) | | [jsonc](https://jsr.io/@std/jsonc) | Settled | [![JSR](https://jsr.io/badges/@std/jsonc)](https://jsr.io/@std/jsonc) | | [log](https://jsr.io/@std/log) | Unstable | [![JSR](https://jsr.io/badges/@std/log)](https://jsr.io/@std/log) | | [media_types](https://jsr.io/@std/media-types) | Settled | [![JSR](https://jsr.io/badges/@std/media-types)](https://jsr.io/@std/media-types) | | [msgpack](https://jsr.io/@std/msgpack) | Unstable | [![JSR](https://jsr.io/badges/@std/msgpack)](https://jsr.io/@std/msgpack) | | [net](https://jsr.io/@std/net) | Unstable | [![JSR](https://jsr.io/badges/@std/net)](https://jsr.io/@std/net) | | [path](https://jsr.io/@std/path) | Settled | [![JSR](https://jsr.io/badges/@std/path)](https://jsr.io/@std/path) | | [regexp](https://jsr.io/@std/regexp) | Unstable | [![JSR](https://jsr.io/badges/@std/regexp)](https://jsr.io/@std/regexp) | | [semver](https://jsr.io/@std/semver) | Unstable | [![JSR](https://jsr.io/badges/@std/semver)](https://jsr.io/@std/semver) | | [streams](https://jsr.io/@std/streams) | Settled | [![JSR](https://jsr.io/badges/@std/streams)](https://jsr.io/@std/streams) | | [testing](https://jsr.io/@std/testing) | Settled | [![JSR](https://jsr.io/badges/@std/testing)](https://jsr.io/@std/testing) | | [text](https://jsr.io/@std/text) | Unstable | [![JSR](https://jsr.io/badges/@std/text)](https://jsr.io/@std/text) | | [toml](https://jsr.io/@std/toml) | Settled | [![JSR](https://jsr.io/badges/@std/toml)](https://jsr.io/@std/toml) | | [ulid](https://jsr.io/@std/ulid) | Unstable | [![JSR](https://jsr.io/badges/@std/ulid)](https://jsr.io/@std/ulid) | | [url](https://jsr.io/@std/url) | Unstable | [![JSR](https://jsr.io/badges/@std/url)](https://jsr.io/@std/url) | | [uuid](https://jsr.io/@std/uuid) | Settled | [![JSR](https://jsr.io/badges/@std/uuid)](https://jsr.io/@std/uuid) | | [webgpu](https://jsr.io/@std/webgpu) | Unstable | [![JSR](https://jsr.io/badges/@std/webgpu)](https://jsr.io/@std/webgpu) | | [yaml](https://jsr.io/@std/yaml) | Settled | [![JSR](https://jsr.io/badges/@std/yaml)](https://jsr.io/@std/yaml) | > Note: Settled status means a package is unlikely to have breaking changes, but > has not yet achieved v1 status. ## Stabilization The Standard Library is now in the process of stabilizing its packages. See #4600 for the release schedule. Each package must go through the following steps to achieve stabilization: 1. Publish version 1.0.0-rc.1 once meeting the following requirements: 1. Approved by at least 2 maintainers. There must be consensus that the design, documentation and implementation of the package are good and that it is unlikely to undergo breaking changes in the future. 1. 100% documented, passing `deno doc --lint` checks and adhering to the [documentation guidelines](https://github.com/denoland/deno_std/blob/main/.github/CONTRIBUTING.md#documentation). 1. Maximum possible test coverage 1. No open issues or pull requests that might lead to breaking changes. For example, issues that suggest new non-breaking features are fine to exist at stabilization. 1. Allow 1 month for the community and the core team to review the package and handle any feedback. There must be consensus that the design, documentation and implementation of the package are good and that it is unlikely to undergo breaking changes in the future. 1. If there are no remaining issues, publish version 1.0.0. If there are remaining issues, extend the waiting period to allow further time for a resolution. Then, repeat this step. ## Architecture Check out the architecture guide [here](./.github/ARCHITECTURE.md). ## Design ### Minimal Exports Files are structured to minimize the number of dependencies they incur and the amount of effort required to manage them, both for the maintainer and the user. In most cases, only a single function or class, alongside its related types, are exported. In other cases, functions that incur negligible dependency overhead will be grouped together in the same file. ## Contributing Check out the contributing guidelines [here](.github/CONTRIBUTING.md). ## Releases New versions of packages are published every 1 or 2 weeks. Package versions >=1.0.0 follow [Semantic Versioning](https://semver.org/), and package versions <1.0.0 follow [this proposal](https://github.com/semver/semver/pull/923). ## Badge [![Built with the Deno Standard Library](./badge.svg)](https://jsr.io/@std) ```html Built with the Deno Standard Library ``` ```md [![Built with the Deno Standard Library](https://raw.githubusercontent.com/denoland/deno_std/main/badge.svg)](https://jsr.io/@std) ``` ## Frequently Asked Questions Check out the frequently asked questions page [here](./.github/FAQ.md).