Stream.promises/pipeline does not support an array of streams starting in 16.10.0. Fixed by 17

[markddrake]

Version

16.10.0

Platform

docker node:16:10.0

Subsystem

No response

What steps will reproduce the bug?

The following code

const { pipeline } = require('stream/promises');
const fs = require('fs');

async function main() {

   const streams  = [fs.createReadStream(__filename),os = fs.createWriteStream(__filename + ".copy")]
   await pipeline(streams)

}

main().then(() => {console.log('Success')}).catch((e) => {console.log(e)})

Works in 16.9.0.

In 16.10.0 it fails with

root@6d10d954f21e:/# node test.js
TypeError [ERR_MISSING_ARGS]: The "streams" argument must be specified
    at new NodeError (node:internal/errors:371:5)
    at pipelineImpl (node:internal/streams/pipeline:181:11)
    at node:stream/promises:26:5
    at new Promise (<anonymous>)
    at pipeline (node:stream/promises:17:10)
    at main (/test.js:8:10)
    at Object.<anonymous> (/test.js:12:1)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32) {
  code: 'ERR_MISSING_ARGS'
}
root@6d10d954f21e:/#

In 17.0.1 it works again.

How often does it reproduce? Is there a required condition?

100% in 16.10..

What is the expected behavior?

The code should work.

What do you see instead?

No response

Additional information

I did not see an existing issue for this...

[markddrake]

If you unpack the array using the ... operator it works in all versions

[Mesteery]

Yes it is "normal", it was a regression, cf. #40191.

[targos]

This will probably be fixed in the next v16.x release.

[targos]

I cherry-picked the fix to v16.x-staging. It will be out in the next release.

36d3b12