How to use newrelic with esm "import" syntax?

https://nodejs.org/docs/latest-v13.x/api/esm.html#esm_enabling

When enabling esm mode, either import is recognized or require is recognized. Both are not recognized together, so is there a way to the import syntax instead of require? (I’m unwilling to convert my entire app back to the require format just for this)

I’d like to use this:

import 'newrelic.js';

I tried this:

import 'newrelic.cjs';

(explicitly making it cjs = use common module for one file)

Which currently gives an error:

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: C:\Projects\backend\src\bin\www.js
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1163:13)

[HishamMubarak]

Ran into this same issue after adding "type": "module" in my package.json file.

The only solution I found was to change code inside newrelic package using patch-package

Changed content inside /node_modules/newrelic/lib/config/index.js at line 35: const DEFAULT_FILENAME = 'newrelic.js' to const DEFAULT_FILENAME = 'newrelic.cjs'

And then in the root of my project, renamed newrelic.js to newrelic.cjs Then imported newrelic at import * as newrelic from 'newrelic' in root index.js

I know this is not a recommended way, but it was the only was I could make it work at the moment.

[carlo-808]

@drmrbrewer If we get to supporting ESM in the agent, we will ensure that the config will load via ESM import. That being said, we have several roadmap items ahead of that work.