47 lines
976 B
JavaScript
47 lines
976 B
JavaScript
let online = true
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let listening = false
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const listeners = new Set()
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function notify() {
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for (const listener of listeners) listener(online)
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}
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function ensureListening() {
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if (listening || typeof uni === 'undefined') return
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listening = true
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if (typeof uni.onNetworkStatusChange === 'function') {
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uni.onNetworkStatusChange((result) => {
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online = Boolean(result.isConnected)
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notify()
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})
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}
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if (typeof uni.getNetworkType === 'function') {
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uni.getNetworkType({
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success: (result) => {
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online = result.networkType !== 'none'
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notify()
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}
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})
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}
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}
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export function isOnline() {
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ensureListening()
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return online
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}
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export function requireOnline(message = '当前网络不可用，请联网后刷新重试') {
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if (!isOnline()) {
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const error = new Error(message)
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error.network = true
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throw error
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}
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}
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export function watchNetwork(listener) {
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ensureListening()
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listeners.add(listener)
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listener(online)
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return () => listeners.delete(listener)
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}
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