yoursunny / NDNts / 13045469972

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yoursunny 
psync: pako => CompressionStream

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35.29
/pkg/psync/src/param-zlib.ts
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import { concatBuffers } from "@ndn/util";
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import { collect } from "streaming-iterables";
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import type { PSyncCodec } from "./codec";










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/** Use zlib compression with PSync. */










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export const PSyncZlib: PSyncCodec.Compression = {




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  async compress(input) {




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    return doTransform(input, new CompressionStream("deflate"));




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  },




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  async decompress(compressed) {




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    return doTransform(compressed, new DecompressionStream("deflate"));




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  },




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};




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async function doTransform(input: Uint8Array, tr: TransformStream<Uint8Array, Uint8Array>): Promise<Uint8Array> {




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  const chunks = await collect(




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    new Blob([input]).stream()




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      .pipeThrough(tr) as unknown as AsyncIterable<Uint8Array>,




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  );




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  return concatBuffers(chunks);




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}




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