40 lines
939 B
TypeScript
40 lines
939 B
TypeScript
import * as _ from './utils'
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export class MediaQueryList extends EventTarget {
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get matches(): boolean {
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return _.internalsOf(this, 'MediaQueryList', 'matches').matches
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}
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get media(): string {
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return _.internalsOf(this, 'MediaQueryList', 'media').media
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}
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}
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_.allowStringTag(MediaQueryList)
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export const initMediaQueryList = (target: Target, exclude: Set<string>) => {
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if (exclude.has('MediaQueryList') || exclude.has('matchMedia')) return
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const EventTarget = target.EventTarget || globalThis.EventTarget
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const MediaQueryList = target.MediaQueryList || globalThis.MediaQueryList
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target.matchMedia = function matchMedia(media: string) {
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const mql = Object.setPrototypeOf(
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new EventTarget(),
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MediaQueryList.prototype
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) as MediaQueryList
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_.INTERNALS.set(mql, {
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matches: false,
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media,
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})
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return mql
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}
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}
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interface Target extends Record<any, any> {
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matchMedia: {
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(media: string): MediaQueryList
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}
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}
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