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load main script and css by reading asset-manifest.

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This commit is contained in:
Peng Lyu 2018-05-19 14:18:00 -07:00
parent 8f429963e4
commit 400f9ed41a
3 changed files with 6 additions and 135 deletions
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16
ext-src/extension.ts
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@ -87,18 +87,14 @@ class ReactPanel {
}
private _getHtmlForWebview() {
const manifest = require(path.join(this._extensionPath, 'build', 'asset-manifest.json'));
const mainScript = manifest['main.js'];
const mainStyle = manifest['main.css'];
// Local path to main script run in the webview
const scriptPathOnDisk = vscode.Uri.file(path.join(this._extensionPath, 'build', 'static', 'js', 'main.6883c34d.js'));
// And the uri we use to load this script in the webview
const scriptPathOnDisk = vscode.Uri.file(path.join(this._extensionPath, 'build', mainScript));
const scriptUri = scriptPathOnDisk.with({ scheme: 'vscode-resource' });
const stylePathOnDisk = vscode.Uri.file(path.join(this._extensionPath, 'build', 'static', 'css', 'main.29266132.css'));
// And the uri we use to load this style in the webview
const stylePathOnDisk = vscode.Uri.file(path.join(this._extensionPath, 'build', mainStyle));
const styleUri = stylePathOnDisk.with({ scheme: 'vscode-resource' });
const baseStyles = `<link rel="stylesheet" type="text/css" href="${styleUri}">`;
// Use a nonce to whitelist which scripts can be run
const nonce = getNonce();
@ -110,7 +106,7 @@ class ReactPanel {
<meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">
<meta name="theme-color" content="#000000">
<title>React App</title>
${baseStyles}
<link rel="stylesheet" type="text/css" href="${styleUri}">
<meta http-equiv="Content-Security-Policy" content="default-src 'none'; img-src vscode-resource: https:; script-src 'nonce-${nonce}';style-src vscode-resource: 'unsafe-inline' http: https: data:;">
<base href="${vscode.Uri.file(path.join(this._extensionPath, 'build')).with({ scheme: 'vscode-resource' })}/">
</head>

2
src/index.tsx
View File

@ -2,10 +2,8 @@ import * as React from 'react';
import * as ReactDOM from 'react-dom';
import App from './App';
import './index.css';
import registerServiceWorker from './registerServiceWorker';
ReactDOM.render(
<App />,
document.getElementById('root') as HTMLElement
);
registerServiceWorker();

123
src/registerServiceWorker.ts
View File

@ -1,123 +0,0 @@
// tslint:disable:no-console
// In production, we register a service worker to serve assets from local cache.
// This lets the app load faster on subsequent visits in production, and gives
// it offline capabilities. However, it also means that developers (and users)
// will only see deployed updates on the 'N+1' visit to a page, since previously
// cached resources are updated in the background.
// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
// This link also includes instructions on opting out of this behavior.
const isLocalhost = Boolean(
window.location.hostname === 'localhost' ||
// [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' ||
// 127.0.0.1/8 is considered localhost for IPv4.
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
export default function register() {
if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
// The URL constructor is available in all browsers that support SW.
const publicUrl = new URL(
process.env.PUBLIC_URL!,
window.location.toString()
);
if (publicUrl.origin !== window.location.origin) {
// Our service worker won't work if PUBLIC_URL is on a different origin
// from what our page is served on. This might happen if a CDN is used to
// serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
return;
}
window.addEventListener('load', () => {
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
if (isLocalhost) {
// This is running on localhost. Lets check if a service worker still exists or not.
checkValidServiceWorker(swUrl);
// Add some additional logging to localhost, pointing developers to the
// service worker/PWA documentation.
navigator.serviceWorker.ready.then(() => {
console.log(
'This web app is being served cache-first by a service ' +
'worker. To learn more, visit https://goo.gl/SC7cgQ'
);
});
} else {
// Is not local host. Just register service worker
registerValidSW(swUrl);
}
});
}
}
function registerValidSW(swUrl: string) {
navigator.serviceWorker
.register(swUrl)
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
if (installingWorker) {
installingWorker.onstatechange = () => {
if (installingWorker.state === 'installed') {
if (navigator.serviceWorker.controller) {
// At this point, the old content will have been purged and
// the fresh content will have been added to the cache.
// It's the perfect time to display a 'New content is
// available; please refresh.' message in your web app.
console.log('New content is available; please refresh.');
} else {
// At this point, everything has been precached.
// It's the perfect time to display a
// 'Content is cached for offline use.' message.
console.log('Content is cached for offline use.');
}
}
};
}
};
})
.catch(error => {
console.error('Error during service worker registration:', error);
});
}
function checkValidServiceWorker(swUrl: string) {
// Check if the service worker can be found. If it can't reload the page.
fetch(swUrl)
.then(response => {
// Ensure service worker exists, and that we really are getting a JS file.
if (
response.status === 404 ||
response.headers.get('content-type')!.indexOf('javascript') === -1
) {
// No service worker found. Probably a different app. Reload the page.
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
window.location.reload();
});
});
} else {
// Service worker found. Proceed as normal.
registerValidSW(swUrl);
}
})
.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();
});
}
}