bug: undici fails to load for node >=14 <14.18.0

[david-luna]

Bug Description

apps with nodejs <14.18.0 have issues loading undici because of node: prefixed imports.

Reproducible By

Just start a new project with a simple script

package.json

{
  "name": "unidci-node-support",
  "version": "1.0.0",
  "description": "",
  "type": "commonjs",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "undici": "^5.28.1"
  }
}

and index.js

const { request } = require('undici');

request('https://httpstat.us/200')
.then((response) => {
  const {
    statusCode,
    headers,
    trailers,
  } = response;

  console.log('response received', statusCode)
  console.log('headers', headers)
  console.log('trailers', trailers)
});

Then run it

nvm use v1.4.0.0
node index.js

Expected Behavior

The script runs and logs the statusCode, headers & trailers

Logs & Screenshots

The error

internal/modules/cjs/loader.js:1017
  throw err;
  ^

Error: Cannot find module 'node:assert'
Require stack:
- /.../issues/unidci-node-support/node_modules/undici/lib/handler/RetryHandler.js
- /.../issues/unidci-node-support/node_modules/undici/index.js
- /.../issues/unidci-node-support/index.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:1014:15)
    at Function.Module._load (internal/modules/cjs/loader.js:884:27)
    at Module.require (internal/modules/cjs/loader.js:1074:19)
    at require (internal/modules/cjs/helpers.js:72:18)
    at Object.<anonymous> (/Users/david/Documents/repos/issues/unidci-node-support/node_modules/undici/lib/handler/RetryHandler.js:1:16)
    at Module._compile (internal/modules/cjs/loader.js:1185:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1205:10)
    at Module.load (internal/modules/cjs/loader.js:1034:32)
    at Function.Module._load (internal/modules/cjs/loader.js:923:14)
    at Module.require (internal/modules/cjs/loader.js:1074:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/.../issues/unidci-node-support/node_modules/undici/lib/handler/RetryHandler.js',
    '/.../issues/unidci-node-support/node_modules/undici/index.js',
    '/.../issues/unidci-node-support/index.js'
  ]
}

Environment

os: MacOS Sonoma 14.1.1
nodejs: 14.0.0

Additional context

Issue was found in one of our CI runs elastic/apm-agent-nodejs#3754 (comment)

[david-luna]

A solution might be to bump the supported node version to v14.18.0

undici/package.json

Line 138 in 286bb44

"node": ">=14.0"