99 lines
3.1 KiB
Markdown
99 lines
3.1 KiB
Markdown
# abort-controller
|
|
|
|
[](https://www.npmjs.com/package/abort-controller)
|
|
[](http://www.npmtrends.com/abort-controller)
|
|
[](https://travis-ci.org/mysticatea/abort-controller)
|
|
[](https://codecov.io/gh/mysticatea/abort-controller)
|
|
[](https://david-dm.org/mysticatea/abort-controller)
|
|
|
|
An implementation of [WHATWG AbortController interface](https://dom.spec.whatwg.org/#interface-abortcontroller).
|
|
|
|
```js
|
|
import AbortController from "abort-controller"
|
|
|
|
const controller = new AbortController()
|
|
const signal = controller.signal
|
|
|
|
signal.addEventListener("abort", () => {
|
|
console.log("aborted!")
|
|
})
|
|
|
|
controller.abort()
|
|
```
|
|
|
|
> https://jsfiddle.net/1r2994qp/1/
|
|
|
|
## 💿 Installation
|
|
|
|
Use [npm](https://www.npmjs.com/) to install then use a bundler.
|
|
|
|
```
|
|
npm install abort-controller
|
|
```
|
|
|
|
Or download from [`dist` directory](./dist).
|
|
|
|
- [dist/abort-controller.mjs](dist/abort-controller.mjs) ... ES modules version.
|
|
- [dist/abort-controller.js](dist/abort-controller.js) ... Common JS version.
|
|
- [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.
|
|
|
|
## 📖 Usage
|
|
|
|
### Basic
|
|
|
|
```js
|
|
import AbortController from "abort-controller"
|
|
// or
|
|
const AbortController = require("abort-controller")
|
|
|
|
// or UMD version defines a global variable:
|
|
const AbortController = window.AbortControllerShim
|
|
```
|
|
|
|
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).
|
|
If you wanted to polyfill `AbortController` for IE, use `abort-controller/polyfill`.
|
|
|
|
### Polyfilling
|
|
|
|
Importing `abort-controller/polyfill` assigns the `AbortController` shim to the `AbortController` global variable if the native implementation was nothing.
|
|
|
|
```js
|
|
import "abort-controller/polyfill"
|
|
// or
|
|
require("abort-controller/polyfill")
|
|
```
|
|
|
|
### API
|
|
|
|
#### AbortController
|
|
|
|
> https://dom.spec.whatwg.org/#interface-abortcontroller
|
|
|
|
##### controller.signal
|
|
|
|
The [AbortSignal](https://dom.spec.whatwg.org/#interface-AbortSignal) object which is associated to this controller.
|
|
|
|
##### controller.abort()
|
|
|
|
Notify `abort` event to listeners that the `signal` has.
|
|
|
|
## 📰 Changelog
|
|
|
|
- See [GitHub releases](https://github.com/mysticatea/abort-controller/releases).
|
|
|
|
## 🍻 Contributing
|
|
|
|
Contributing is welcome ❤️
|
|
|
|
Please use GitHub issues/PRs.
|
|
|
|
### Development tools
|
|
|
|
- `npm install` installs dependencies for development.
|
|
- `npm test` runs tests and measures code coverage.
|
|
- `npm run clean` removes temporary files of tests.
|
|
- `npm run coverage` opens code coverage of the previous test with your default browser.
|
|
- `npm run lint` runs ESLint.
|
|
- `npm run build` generates `dist` codes.
|
|
- `npm run watch` runs tests on each file change.
|