58 lines
1.5 KiB
JavaScript
58 lines
1.5 KiB
JavaScript
import { Response } from 'node-fetch';
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import { PassThrough } from 'stream';
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const responseInternalSymbol = Object.getOwnPropertySymbols(new Response())[1];
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export class NFCResponse extends Response {
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constructor(bodyStream, metaData, ejectFromCache, fromCache) {
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const stream1 = new PassThrough();
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const stream2 = new PassThrough();
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bodyStream.pipe(stream1);
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bodyStream.pipe(stream2);
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super(stream1, metaData);
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this.ejectFromCache = ejectFromCache;
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this.fromCache = fromCache;
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this.serializationStream = stream2;
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}
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static fromNodeFetchResponse(res, ejectFromCache) {
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const bodyStream = res.body;
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const metaData = {
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url: res.url,
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status: res.status,
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statusText: res.statusText,
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headers: res.headers.raw(),
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size: res.size,
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timeout: res.timeout,
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counter: res[responseInternalSymbol].counter,
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};
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return new NFCResponse(bodyStream, metaData, ejectFromCache, false);
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}
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static fromCachedResponse(bodyStream, rawMetaData, ejectSelfFromCache) {
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return new NFCResponse(bodyStream, rawMetaData, ejectSelfFromCache, true);
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}
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serialize() {
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return {
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bodyStream: this.serializationStream,
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metaData: {
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url: this.url,
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status: this.status,
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statusText: this.statusText,
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headers: this.headers.raw(),
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size: this.size,
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timeout: this.timeout,
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counter: this[responseInternalSymbol].counter,
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},
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};
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}
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ejectFromCache() {
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return this.ejectSelfFromCache();
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}
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}
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