157 lines
7.9 KiB
Markdown
157 lines
7.9 KiB
Markdown
# WebAPI
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**WebAPI** lets you use Web APIs not present in Node v16 and later.
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```sh
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npm install @astrojs/webapi
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```
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```js
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import { polyfill } from '@astrojs/webapi'
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polyfill(globalThis)
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const t = new EventTarget()
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const e = new CustomEvent('hello')
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t.addEventListener('hello', console.log)
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t.dispatchEvent(e) // logs `e` event from `t`
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```
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These APIs are combined from popular open source projects and configured to share implementation details. This allows their behavior to match browser expectations as well as reduce their combined memory footprint.
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## Features
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- [ByteLengthQueuingStrategy](https://developer.mozilla.org/en-US/docs/Web/API/ByteLengthQueuingStrategy)
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- [CanvasRenderingContext2D](https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D)
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- [CSSStyleSheet](https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet)
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- [CountQueuingStrategy](https://developer.mozilla.org/en-US/docs/Web/API/CountQueuingStrategy)
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- [CustomElementRegistry](https://developer.mozilla.org/en-US/docs/Web/API/CustomElementRegistry)
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- [CustomEvent](https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent)
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- [DOMException](https://developer.mozilla.org/en-US/docs/Web/API/DOMException)
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- [Document](https://developer.mozilla.org/en-US/docs/Web/API/Document)
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- [DocumentFragment](https://developer.mozilla.org/en-US/docs/Web/API/DocumentFragment)
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- [Element](https://developer.mozilla.org/en-US/docs/Web/API/Element)
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- [Event](https://developer.mozilla.org/en-US/docs/Web/API/Event)
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- [EventTarget](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget)
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- [File](https://developer.mozilla.org/en-US/docs/Web/API/File)
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- [FormData](https://developer.mozilla.org/en-US/docs/Web/API/FormData)
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- [HTMLDocument](https://developer.mozilla.org/en-US/docs/Web/API/HTMLDocument)
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- [HTMLElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement)
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- [HTMLBodyElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLBodyElement)
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- [HTMLCanvasElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement)
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- [HTMLDivElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLDivElement)
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- [HTMLHeadElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLHeadElement)
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- [HTMLHtmlElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLHtmlElement)
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- [HTMLImageElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement)
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- [HTMLSpanElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLSpanElement)
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- [HTMLStyleElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLStyleElement)
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- [HTMLTemplateElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLTemplateElement)
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- [HTMLUnknownElement](https://developer.mozilla.org/en-US/docs/Web/API/HTMLUnknownElement)
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- [Headers](https://developer.mozilla.org/en-US/docs/Web/API/Headers)
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- [IntersectionObserver](https://developer.mozilla.org/en-US/docs/Web/API/IntersectionObserver)
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- [Image](https://developer.mozilla.org/en-US/docs/Web/API/Image)
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- [ImageData](https://developer.mozilla.org/en-US/docs/Web/API/ImageData)
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- [MediaQueryList](https://developer.mozilla.org/en-US/docs/Web/API/MediaQueryList)
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- [MutationObserver](https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver)
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- [Node](https://developer.mozilla.org/en-US/docs/Web/API/Node)
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- [NodeIterator](https://developer.mozilla.org/en-US/docs/Web/API/NodeIterator)
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- [OffscreenCanvas](https://developer.mozilla.org/en-US/docs/Web/API/OffscreenCanvas)
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- [ReadableByteStreamController](https://developer.mozilla.org/en-US/docs/Web/API/ReadableByteStreamController)
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- [ReadableStream](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream)
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- [ReadableStreamBYOBReader](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBReader)
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- [ReadableStreamBYOBRequest](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamBYOBRequest)
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- [ReadableStreamDefaultController](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultController)
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- [ReadableStreamDefaultReader](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStreamDefaultReader)
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- [Request](https://developer.mozilla.org/en-US/docs/Web/API/Request)
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- [Response](https://developer.mozilla.org/en-US/docs/Web/API/Response)
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- [ShadowRoot](https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot)
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- [Storage](https://developer.mozilla.org/en-US/docs/Web/API/Storage)
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- [StyleSheet](https://developer.mozilla.org/en-US/docs/Web/API/StyleSheet)
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- [TransformStream](https://developer.mozilla.org/en-US/docs/Web/API/TransformStream)
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- [TreeWalker](https://developer.mozilla.org/en-US/docs/Web/API/TreeWalker)
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- [WritableStream](https://developer.mozilla.org/en-US/docs/Web/API/WritableStream)
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- [WritableStreamDefaultController](https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultController)
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- [WritableStreamDefaultWriter](https://developer.mozilla.org/en-US/docs/Web/API/WritableStreamDefaultWriter)
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- [Window](https://developer.mozilla.org/en-US/docs/Web/API/Window)
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- [cancelAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame)
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- [cancelIdleCallback](https://developer.mozilla.org/en-US/docs/Web/API/cancelIdleCallback)
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- [clearTimeout](https://developer.mozilla.org/en-US/docs/Web/API/clearTimeout)
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- [fetch](https://developer.mozilla.org/en-US/docs/Web/API/fetch)
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- [localStorage](https://developer.mozilla.org/en-US/docs/Web/API/localStorage)
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- [requestAnimationFrame](https://developer.mozilla.org/en-US/docs/Web/API/requestAnimationFrame)
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- [requestIdleCallback](https://developer.mozilla.org/en-US/docs/Web/API/requestIdleCallback)
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- [setTimeout](https://developer.mozilla.org/en-US/docs/Web/API/setTimeout)
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- [structuredClone](https://developer.mozilla.org/en-US/docs/Web/API/structuredClone)
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- [URLPattern](https://developer.mozilla.org/en-US/docs/Web/API/URLPattern)
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## Usage
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You can use WebAPIs as individual exports.
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```js
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import { Event, EventTarget, File, fetch, Response } from '@astrojs/webapi'
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```
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You can apply WebAPIs to an object, like `globalThis`.
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```js
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import { polyfill } from '@astrojs/webapi'
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polyfill(globalThis)
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```
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## Polyfill Options
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The `exclude` option receives a list of WebAPIs to exclude from polyfilling.
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```js
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polyfill(globalThis, {
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// disables polyfills for setTimeout clearTimeout
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exclude: 'setTimeout clearTimeout',
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})
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```
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The `exclude` option accepts shorthands to exclude multiple polyfills. These shorthands end with the plus sign (`+`).
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```js
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polyfill(globalThis, {
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// disables polyfills for setTimeout clearTimeout
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exclude: 'Timeout+',
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})
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```
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```js
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polyfill(globalThis, {
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// disables polyfills for Node, Window, Document, HTMLElement, etc.
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exclude: 'Node+',
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})
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```
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```js
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polyfill(globalThis, {
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// disables polyfills for Event, EventTarget, Node, Window, Document, HTMLElement, etc.
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exclude: 'Event+',
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})
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```
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| Shorthand | Excludes |
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|:-------------- |:-------- |
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| `Document+` | `Document`, `HTMLDocument` |
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| `Element+` | `Element`, and exclusions from `HTMLElement+` |
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| `Event+` | `Event`, `CustomEvent`, `EventTarget`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
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| `EventTarget+` | `Event`, `CustomEvent`, `EventTarget`, `MediaQueryList`, `Window`, and exclusions from `Node+` |
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| `HTMLElement+` | `CustomElementsRegistry`, `HTMLElement`, `HTMLBodyElement`, `HTMLCanvasElement`, `HTMLDivElement`, `HTMLHeadElement`, `HTMLHtmlElement`, `HTMLImageElement`, `HTMLStyleElement`, `HTMLTemplateElement`, `HTMLUnknownElement`, `Image` |
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| `Node+` | `Node`, `DocumentFragment`, `ShadowRoot`, `Document`, `HTMLDocument`, and exclusions from `Element+` |
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| `StyleSheet+` | `StyleSheet`, `CSSStyleSheet` |
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---
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## License & Attribution
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Thank you to Jon Neal for his work on the original [webapi](https://github.com/astro-community/webapi) project that this package is forked from. Licensed under the CC0-1.0 License.
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Code from [event-target-shim](https://www.npmjs.com/package/event-target-shim) is licensed under the MIT License (MIT), Copyright Toru Nagashima.
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