[Node.js 23.x] CJS module gulp-cli\lib\shared\require-or-import.js is loading ESM gulpfile.js using require()

[cedx]

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What were you expecting to happen?

Launching a Gulp task doesn't produce any warning.

What actually happened?

Since Node.js v23, an ExperimentalWarning is triggered.

This is because the requireOrImport() function uses require() to check if the gulpfile is a CommonJS module... but now Node.js allows to use require() for loading ES modules. So the ERR_REQUIRE_ESM error is not triggered anymore.

See: https://nodejs.org/en/blog/release/v23.0.0

Please give us a sample of your gulpfile

This issue is not related to the content of the gulpfile.
But feel free to test this project: https://github.com/cedx/lcov.js

Terminal output / screenshots

(node:26792) ExperimentalWarning: CommonJS module [...]\gulp-cli\lib\shared\require-or-import.js is loading ES Module [...]\gulpfile.js using require().

Please provide the following information:

• OS & version [e.g. MacOS Catalina 10.15.4]: Windows 11
• node version (run node -v): 23.1.0
• npm version (run npm -v): 10.9.0
• gulp version (run gulp -v): CLI version: 3.0.0, Local version: 5.0.0

Additional information

The launched tasks still run fine (unless the gulpfile uses top-level await). There is no runtime error, just an ExperimentalWarning.

[jtrumbull]

Same issue, same environment

[mikestreety]

I have just been experiencing this same issue on MacOS (And in Docker Alpine) with Node 22.12 - We've had to fix to 22.11 to resolve.

[ehmicky]

Node.js 23.4.0 does not print this type of warnings anymore, so this issue should now be solved.

See also debug-js/debug#975 which had a similar problem.

[cedx]

I confirm : with Node 23.4.0, the warning is not displayed anymore.
nodejs/node#55960

[mikestreety]

Hey,

I get that this is fixed for those running 23.4, however 23 isn't on LTS and isn't the default Node version downloaded when navigating to https://nodejs.org/en/download/package-manager.

22.12 is also the Node version used when using any of the lts Docker images, which I can imagine a lot of businesses (like ours) do.

Sorry! I may be misunderstanding the linked issue so it may be also resolved in 22.12 too.

Thanks. We appreciate everything you do 🙏

[cedx]

@mikestreety It should also be fixed in version 22.12.
nodejs/node#56040

it will emit an experimental warning unless require() comes from a path that contains node_modules