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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | 12x 13x 13x | /* eslint-disable prefer-rest-params, prefer-spread */
import { AnyFunction } from '../types'
/**
* 绑定事件函数。
*
* @public
* @param type 事件类型
* @param callback 事件回调
* @param options 事件选项
* @returns 返回事件解绑函数
*/
export type BindEventFunction<T> = <
// prettier-ignore
E extends
// window
T extends typeof window
? WindowEventMap
// 打包时报错: Cannot find name 'HTMLVideoElementEventMap'
// video
// : T extends HTMLVideoElement
// ? HTMLVideoElementEventMap
// media
: T extends HTMLMediaElement
? HTMLMediaElementEventMap
// body
: T extends HTMLBodyElement
? HTMLBodyElementEventMap
// frame set
: T extends HTMLFrameSetElement
? HTMLFrameSetElementEventMap
// FileReader
: T extends FileReader
? FileReaderEventMap
// WebSocket
: T extends WebSocket
? WebSocketEventMap
// svg element
: T extends SVGElement
? SVGElementEventMap
// html element
: T extends HTMLElement
? HTMLElementEventMap
// others
: Record<string, any>,
K extends keyof E
>(
type: K,
callback: (this: T, ev: E[K]) => any,
options?: boolean | AddEventListenerOptions,
) => () => any
/**
* 绑定事件。
*
* @public
* @param target 事件绑定的目标
* @returns 返回事件绑定函数
* @example
* ```typescript
* const bindWindowEvent = bindEvent(window)
* const unbindClick = bindWindowEvent('click', console.log)
* const unbindScroll = bindWindowEvent('scroll', console.log)
* ```
*/
export function bindEvent<
T extends Record<'addEventListener' | 'removeEventListener', AnyFunction>
>(target: T): BindEventFunction<T> {
return (type, callback, options) => {
target.addEventListener(type, callback, options)
return () => target.removeEventListener(type, callback, options)
}
}
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