98 lines
3.1 KiB
Markdown
98 lines
3.1 KiB
Markdown
# abort-controller
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[](https://www.npmjs.com/package/abort-controller)
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[](http://www.npmtrends.com/abort-controller)
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[](https://travis-ci.org/mysticatea/abort-controller)
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[](https://codecov.io/gh/mysticatea/abort-controller)
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[](https://david-dm.org/mysticatea/abort-controller)
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An implementation of [WHATWG AbortController interface](https://dom.spec.whatwg.org/#interface-abortcontroller).
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```js
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import AbortController from "abort-controller"
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const controller = new AbortController()
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const signal = controller.signal
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signal.addEventListener("abort", () => {
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console.log("aborted!")
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})
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controller.abort()
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```
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> https://jsfiddle.net/1r2994qp/1/
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## 💿 Installation
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Use [npm](https://www.npmjs.com/) to install then use a bundler.
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```
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npm install abort-controller
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```
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Or download from [`dist` directory](./dist).
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- [dist/abort-controller.mjs](dist/abort-controller.mjs) ... ES modules version.
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- [dist/abort-controller.js](dist/abort-controller.js) ... Common JS version.
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- [dist/abort-controller.umd.js](dist/abort-controller.umd.js) ... UMD (Universal Module Definition) version. This is transpiled by [Babel](https://babeljs.io/) for IE 11.
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## 📖 Usage
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### Basic
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```js
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import AbortController from "abort-controller"
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// or
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const AbortController = require("abort-controller")
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// or UMD version defines a global variable:
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const AbortController = window.AbortControllerShim
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```
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If your bundler recognizes `browser` field of `package.json`, the imported `AbortController` is the native one and it doesn't contain shim (even if the native implementation was nothing).
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If you wanted to polyfill `AbortController` for IE, use `abort-controller/polyfill`.
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### Polyfilling
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Importing `abort-controller/polyfill` assigns the `AbortController` shim to the `AbortController` global variable if the native implementation was nothing.
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```js
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import "abort-controller/polyfill"
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// or
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require("abort-controller/polyfill")
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```
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### API
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#### AbortController
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> https://dom.spec.whatwg.org/#interface-abortcontroller
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##### controller.signal
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The [AbortSignal](https://dom.spec.whatwg.org/#interface-AbortSignal) object which is associated to this controller.
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##### controller.abort()
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Notify `abort` event to listeners that the `signal` has.
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## 📰 Changelog
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- See [GitHub releases](https://github.com/mysticatea/abort-controller/releases).
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## 🍻 Contributing
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Contributing is welcome ❤️
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Please use GitHub issues/PRs.
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### Development tools
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- `npm install` installs dependencies for development.
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- `npm test` runs tests and measures code coverage.
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- `npm run clean` removes temporary files of tests.
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- `npm run coverage` opens code coverage of the previous test with your default browser.
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- `npm run lint` runs ESLint.
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- `npm run build` generates `dist` codes.
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- `npm run watch` runs tests on each file change.
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