Node debugger issue with 3.0.0-alpha.14 through 17

[zachleat]

@zachleat I think the fix for this issue (6b8e53e) broke a workflow:

Versions:

• Node.js v20.15.1 (installed via nvm)
• Eleventy 3.0.0-alpha.14 through 3.0.0-alpha.17
• Google Chrome 126.0.6478.178

I try to use the Chrome DevTools for Node.js to profile my 11ty build with this command:

node --inspect-brk ./node_modules/.bin/eleventy

After connecting the debugger and resuming execution, the build hangs. When I manually pause the debugger, it's stuck here in 11ty code:

eleventy/src/Util/Require.js

Line 17 in 7128d07

module.register("./EsmResolver.js", import.meta.url, {

Deeper into the stack, execution has stopped here:

https://github.com/nodejs/node/blob/a407d1f0b3669cc82c755700f0d500fb27cc39ea/lib/internal/modules/esm/hooks.js#L592

The stack at that point looks like

    at HooksProxy.waitForWorker (node:internal/modules/esm/hooks:592:9)
    at HooksProxy.makeSyncRequest (node:internal/modules/esm/hooks:666:10)
    at CustomizedModuleLoader.register (node:internal/modules/esm/loader:466:23)
    at ModuleLoader.register (node:internal/modules/esm/loader:331:33)
    at Function.register (node:internal/modules/esm/loader:615:35)
    at file:///home/noelle/dev/www/node_modules/@11ty/eleventy/src/Util/Require.js:17:9
    at ModuleJob.run (node:internal/modules/esm/module_job:222:25)
    at async ModuleLoader.import (node:internal/modules/esm/loader:316:24)

When I use Eleventy 3.0.0-alpha.13, the problem doesn't manifest and I can debug through the entire build without issue.

via @noelleleigh #3270 (comment)

[zachleat]

I can confirm that it works in some versions of Node and some not:

• Works in Node v20.14
• Hangs in Node v20.15
• Works in Node v22.1
• Hangs in Node v22.2
• Hangs in Node v22.3
• Hangs in Node v22.4
• Hangs in Node v22.5

[zachleat]

Confirmed removing EsmResolver fixes the issue.

[zachleat]

Unfortunately, this one looks out of my control. This independent MVP still fails with the same workflow:

node --inspect-brk ./registerer.js

import module from "node:module";

module.register("./empty-file.js");

console.log( "DONE!" );

Do you want to file this upstream at the Node repo or would you like me to?

[zachleat]

Until this is fixed upstream you can use the ELEVENTY_SKIP_ESM_RESOLVER environment variable in 3.0.0-alpha.18 or newer.

[noelleleigh]

Do you want to file this upstream at the Node repo or would you like me to?

You understand this problem better than I do, so you’re probably the one best equipped to file an issue.

Thanks for looking into it!

[zachleat]

I can confirm that this bug was fixed in Node 22.7.0 and newer!