问题描述
我正在 React 中做 PWA - 我在这方面是个菜鸟,但 PWA 已经运行了几个星期并且已经可以安装了。 :)
我突然收到这条消息:
网站无法安装:页面无法脱机工作。从 Chrome 93 开始,可安装性标准发生变化,此站点将无法安装。有关详细信息,请参阅 https://goo.gle/improved-pwa-offline-detection。
我想问题是这个人在这里写的是什么: https://javascript.plainenglish.io/your-pwa-is-going-to-break-in-august-2021-34982f329f40
但我的技能太差,无法在我的 Service-Worker 中实施他的建议。
如果您能在下面查看我的 Service-Worker 并告诉我要更改的内容,我将不胜感激。
window.location.hostname === 'localhost' ||
window.location.hostname === '[::1]' ||
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
export function register(config) {
if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
const publicUrl = new URL(process.env.PUBLIC_URL,window.location.href);
if (publicUrl.origin !== window.location.origin) {
return;
}
window.addEventListener('load',() => {
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
if (isLocalhost) {
checkValidServiceWorker(swUrl,config);
navigator.serviceWorker.ready.then(() => {
console.log(
'This web app is being served cache-first by a service ' +
'worker. '
);
});
} else {
registerValidSW(swUrl,config);
}
});
}
}
function registerValidSW(swUrl,config) {
navigator.serviceWorker
.register(swUrl)
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
if (installingWorker == null) {
return;
}
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
if (navigator.serviceWorker.controller) {
console.log(
'New content is available and will be used when all ' +
'tabs for this page are closed.'
);
if (config && config.onUpdate) {
config.onUpdate(registration);
}
} else {
console.log('Content is cached for offline use.');
if (config && config.onSuccess) {
config.onSuccess(registration);
}
}
}
};
};
})
.catch(error => {
console.error('Error during service worker registration:',error);
});
}
function checkValidServiceWorker(swUrl,config) {
fetch(swUrl,{
headers: { 'Service-Worker': 'script' }
})
.then(response => {
const contentType = response.headers.get('content-type');
if (
response.status === 404 ||
(contentType != null && contentType.indexOf('javascript') === -1)
) {
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
window.location.reload();
});
});
} else {
registerValidSW(swUrl,config);
}
})
.catch(() => {
console.log(
'No internet connection found. App is running in offline mode.'
);
});
}
export function unregister() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.ready
.then(registration => {
registration.unregister();
})
.catch(error => {
console.error(error.message);
});
}}
抱歉这里的格式。不太擅长在 Stackoverflow 中粘贴代码...
解决方法
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