ui-default: init

将ui-default合并至主存储库便于维护

packages/ui-default/static/streamsaver/sw.js

@@ -0,0 +1,81 @@
+/* eslint-disable */
+self.addEventListener('install', () => {
+  self.skipWaiting();
+});
+self.addEventListener('activate', (event) => {
+  event.waitUntil(self.clients.claim());
+});
+const map = new Map();
+self.onmessage = (event) => {
+  if (event.data === 'ping') {
+    return;
+  }
+  const { data } = event;
+  const downloadUrl = data.url || `${self.registration.scope + Math.random()}/${typeof data === 'string' ? data : data.filename}`;
+  const port = event.ports[0];
+  const metadata = new Array(3);
+  metadata[1] = data;
+  metadata[2] = port;
+  if (event.data.readableStream) {
+    metadata[0] = event.data.readableStream;
+  } else if (event.data.transferringReadable) {
+    port.onmessage = (evt) => {
+      port.onmessage = null;
+      metadata[0] = evt.data.readableStream;
+    };
+  } else metadata[0] = createStream(port);
+  map.set(downloadUrl, metadata);
+  port.postMessage({ download: downloadUrl });
+};
+function createStream(port) {
+  return new ReadableStream({
+    start(controller) {
+      port.onmessage = ({ data }) => {
+        if (data === 'end') return controller.close();
+        if (data === 'abort') {
+          controller.error('Aborted the download');
+          return;
+        }
+        controller.enqueue(data);
+      };
+    },
+    cancel() {
+      console.log('user aborted');
+    },
+  });
+}
+self.onfetch = (event) => {
+  const { url } = event.request;
+  if (url.endsWith('/ping')) return event.respondWith(new Response('pong'));
+  const hijacke = map.get(url);
+  if (!hijacke) return null;
+  const [stream, data, port] = hijacke;
+  map.delete(url);
+  const responseHeaders = new Headers({
+    'Content-Type': 'application/octet-stream; charset=utf-8',
+    'Content-Security-Policy': "default-src 'none'",
+    'X-Content-Security-Policy': "default-src 'none'",
+    'X-WebKit-CSP': "default-src 'none'",
+    'X-XSS-Protection': '1; mode=block',
+  });
+  const headers = new Headers(data.headers || {});
+  if (headers.has('Content-Length')) {
+    responseHeaders.set('Content-Length', headers.get('Content-Length'));
+  }
+  if (headers.has('Content-Disposition')) {
+    responseHeaders.set('Content-Disposition', headers.get('Content-Disposition'));
+  }
+  if (data.size) {
+    console.warn('Depricated');
+    responseHeaders.set('Content-Length', data.size);
+  }
+  let fileName = typeof data === 'string' ? data : data.filename;
+  if (fileName) {
+    console.warn('Depricated');
+    // Make filename RFC5987 compatible
+    fileName = encodeURIComponent(fileName).replace(/['()]/g, escape).replace(/\*/g, '%2A');
+    responseHeaders.set('Content-Disposition', `attachment; filename*=UTF-8''${fileName}`);
+  }
+  event.respondWith(new Response(stream, { headers: responseHeaders }));
+  port.postMessage({ debug: 'Download started' });
+};