Read zip file as stream

[DavideMacchia]

Is there a way to read a zip file one file by one as a stream? I noticed that JSzip.loadAsync take in input a NodeJS.ReadableStream but it's not clear to me how to use it.

[jtara1]

using node 14, I'd hope the following would work, but it throws an error

const fs = require('fs');
const JSZip = require('jszip');
// const zip = new JSZip();

const { promisify } = require('util');
const pipeline = promisify(require('stream').pipeline);

(async () => {
  const fp = 'results.zip';
  const rs = fs.createReadStream(fp);
  const ws = fs.createWriteStream('temp');
  // rs.pipe(JSZip.loadAsync).pipe(ws);

  await pipeline(
    rs,
    async function* (readStream) {
      return JSZip.loadAsync(readStream)
    },
    ws
  );

  let a;
})();

throws

(node:33289) UnhandledPromiseRejectionWarning: Error: JSZip can't accept a stream when loading a zip file.

I guess there could be multiple files so it probably won't be able to pipe into file write stream nicely.

[Yueyanc]

using node 14, I'd hope the following would work, but it throws an error使用节点14，我希望下面的工作，但它抛出一个错误

const fs = require('fs');
const JSZip = require('jszip');
// const zip = new JSZip();

const { promisify } = require('util');
const pipeline = promisify(require('stream').pipeline);

(async () => {
  const fp = 'results.zip';
  const rs = fs.createReadStream(fp);
  const ws = fs.createWriteStream('temp');
  // rs.pipe(JSZip.loadAsync).pipe(ws);

  await pipeline(
    rs,
    async function* (readStream) {
      return JSZip.loadAsync(readStream)
    },
    ws
  );

  let a;
})();

throws 抛出

(node:33289) UnhandledPromiseRejectionWarning: Error: JSZip can't accept a stream when loading a zip file.

I guess there could be multiple files so it probably won't be able to pipe into file write stream nicely.我猜可能有多个文件，所以它可能无法很好地导入文件写入流。

same