JavaScript Incorrect value for stdio stream: WriteStream

const barStream = fs.createWriteStream('bar');
const foo = spawn('foo', [], { stdio: ['ignore', barStream, 'inherit'] });

throws an error:

Incorrect value for stdio stream: WriteStream

Doing this in reverse like foo.stdout.pipe(barStream) likely does the trick in some cases.

But why exactly WriteStream cannot be supplied as stdout stream? Is there a way to make barStream suitable for stdout?

Answer:1

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