Note that React Hooks don’t cover all use cases for classes yet but they’re very close. We described our plan for the next months in the recently published React Roadmap. It will soon be included into Create React App by default. We strongly recommend enabling a new lint rule called eslint-plugin-react-hooks to enforce best practices with Hooks. They are also supported in the latest Flow and TypeScript definitions for React.
React Hooks are now supported by React DevTools. React Native will support Hooks in the 0.59 release. Hooks won’t work if you forget to update, for example, React DOM. Note that to enable Hooks, all React packages need to be 16.8.0 or higher. Yes! Starting with 16.8.0, React includes a stable implementation of React Hooks for:
#UNPKG REACTDOM CODE#
Code using Hooks will work side by side with existing code using classes. Instead, try using Hooks in some of the new components, and let us know what you think. We don’t recommend rewriting your existing applications to use Hooks overnight. The Hooks FAQ describes the gradual adoption strategy. Hooks have no breaking changes, and we have no plans to remove classes from React. showcases community-maintained Hooks recipes and demos.Making Sense of React Hooks explores the new possibilities unlocked by Hooks.Building Your Own Hooks demonstrates code reuse with custom Hooks.Hooks at a Glance is a fast-paced overview of the built-in Hooks.Introducing Hooks explains why we’re adding Hooks to React.If you’ve never heard of Hooks before, you might find these resources interesting: You can also build your own Hooks to share reusable stateful logic between components. Hooks let you use state and other React features without writing a class. The unpkg CDN is powered by Cloudflare, one of the world's largest and fastest cloud network platforms.With React 16.8, React Hooks are available in a stable release! What Are Hooks? Instead, please reach out to with any questions or concerns. Please do not contact npm for help with unpkg. unpkg is not affiliated with or supported by npm, Inc. Unpkg is an open source project built and maintained by Michael Jackson. That's it! Now when you npm publish you'll have a version available on unpkg as well. Use a build script to generate your UMD build in the umd directory when you publish.Add the umd directory to your files array in package.json.Add the umd (or dist) directory to your.You can do this easily using the following setup: All you need to do is include your UMD build in your npm package (not your repo, that's different!). Workflowįor npm package authors, unpkg relieves the burden of publishing your code to a CDN in addition to the npm registry. This will also load more quickly because we won't have to resolve the latest version and redirect them. If you want users to be able to use the latest version when you cut a new release, the best policy is to put the version number in the URL directly in your installation instructions. Redirects are cached for 10 minutes at the CDN, 1 minute in browsers. This is the latest version when no version is specified, or the maxSatisfying version when a semver version is given. URLs that do not specify a package version number redirect to one that does. This works because npm does not allow package authors to overwrite a package that has already been published with a different one at the same version number.īrowsers are instructed (via the Cache-Control header) to cache assets indefinitely (1 year). The CDN caches files based on their permanent URL, which includes the npm package version. This feature is very experimental Cache Behavior any/file?meta) ?module Expands all “bare” import specifiers in JavaScript modules to unpkg URLs. Query Parameters ?meta Return metadata about any file in a package as JSON (e.g.
use a “bare” URL), unpkg will serve the file specified by the unpkg field in package.json, or fall back to main.Īppend a / at the end of a URL to view a listing of all the files in a package. may also use a semver range or a tag instead of a fixed version number, or omit the version/tag entirely to use the latest tag.
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