mirror of
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1 line
1015 B
JavaScript
1 line
1015 B
JavaScript
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const WRITE=0,PULL=0,ERROR=1,ABORT=1,CLOSE=2,PING=3;class MessagePortSource{controller;constructor(e){this.port=e,this.port.onmessage=e=>this.onMessage(e.data)}start(e){this.controller=e}pull(){this.port.postMessage({type:0})}cancel(e){this.port.postMessage({type:1,reason:e.message}),this.port.close()}onMessage(e){0===e.type&&this.controller.enqueue(e.chunk),1===e.type&&(this.controller.error(e.reason),this.port.close()),2===e.type&&(this.controller.close(),this.port.close())}}self.addEventListener("install",(()=>{self.skipWaiting()})),self.addEventListener("activate",(e=>{e.waitUntil(self.clients.claim())}));const map=new Map;globalThis.addEventListener("message",(e=>{const t=e.data;t.url&&t.readablePort&&(t.rs=new ReadableStream(new MessagePortSource(e.data.readablePort),new CountQueuingStrategy({highWaterMark:4})),map.set(t.url,t))})),globalThis.addEventListener("fetch",(e=>{const t=e.request.url,s=map.get(t);if(!s)return null;map.delete(t),e.respondWith(new Response(s.rs,{headers:s.headers}))}));
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