impossible to use spec test reporter without new

[mcollina]

Version

v18.18.1 and v20.8.0

Platform

all

Subsystem

node:test

What steps will reproduce the bug?

const { spec } = require('node:test/reporters');
const { run } = require('node:test');
const path = require('node:path');

run({ files: [path.resolve('./tests/test.js')] })
  .compose(spec)
  .pipe(process.stdout);

Nothing gets printed.

Instead, the following works:

const { spec } = require('node:test/reporters');
const { run } = require('node:test');
const path = require('node:path');

run({ files: [path.resolve('./tests/test.js')] })
  .compose(new spec)
  .pipe(process.stdout);

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

all the time.

What is the expected behavior? Why is that the expected behavior?

No response

What do you see instead?

No output without new

Additional information

No response

[pluris]

Hello, I have a question.
Should both work(new spec, spec)? Or should only spec work?
Currently, new spec and spec() work, but spec does not work.
I would like to ask if it should work the same way as tap and dot.

While looking for related content, I found that there was an issue that the behavior was different before. (#48112)

[himself65]

I'd like to work on this

[himself65]

I think the reason is spec is a class, but others are *function

[aduh95]

I'm not sure this is a bug, you need to call the function, i.e. .compose(spec()). FWIW when using the new keyboard, you are calling the function as a constructor, which is supported but it's no longer necessary since #49184 has landed.

[mcollina]

I'm not sure this is a bug, you need to call the function, i.e. .compose(spec()). FWIW when using the new keyboard, you are calling the function as a constructor, which is supported but it's no longer necessary since #49184 has landed.

It's a bug in the form of anything you said is not documented. The only documented thing is .compose(tap), which is incorrect.

[himself65]

node/lib/internal/streams/duplexify.js

Line 86 in 3a648af

const { value, write, final, destroy } = fromAsyncGen(body);

The error starts from here, body is class SpecReporter, but nodejs treats it as a async generator