subpath import cannot resolve node internal module

[xfournet]

When bundling, a subpath import to a node internal module (eg like 'stream') is not resolved by esbuild, leading to an error.

Reproduction case

package.json

{
  "type": "module",
  "scripts": {
    "run-direct": "node main-direct.js",
    "run-subpathimport": "node main-subpathimport.js",
    "bundle-direct": "esbuild --bundle --platform=node main-direct.js",
    "bundle-subpathimport": "esbuild --bundle --platform=node main-subpathimport.js"
  },
  "imports": {
    "#stream": {
      "node": "stream",
      "default": "./stub.js"
    }
  },
  "devDependencies": {
    "esbuild": "0.19.5"
  }
}

main-direct.js

import * as stream from 'stream';

console.log(Object.keys(stream));

main-subpathimport.js

import * as stream from '#stream';

console.log(Object.keys(stream));

stub.js

export const test = 'test';

npm run run-direct, npm run run-subpathimport, npm run bundle-direct all works correctly

npm run bundle-subpathimport fails with error

✘ [ERROR] Could not resolve "#stream"

main-subpathimport.js:1:24:
  1 │ import * as stream from '#stream';
    ╵                         ~~~~~~~~~

The remapped path "stream" could not be resolved:

package.json:11:14:
  11 │       "node": "stream",
     ╵               ~~~~~~~~

You can mark the path "#stream" as external to exclude it from the bundle, which will remove this
error and leave the unresolved path in the bundle.

The error The remapped path "stream" could not be resolved should not happen in that case ?