datadog api client causing some issues within CF workers for versions 1.26+

[buildbreaker]

Describe the bug
I'm currently using the datadog api client within my cloudflare worker and I recently updated the client from version 1.24 to 1.27. I ran into this error since the update:

"TypeError: Illegal invocation: function called with incorrect `this` reference. See https://developers.cloudflare.com/workers/observability/errors/#illegal-invocation-errors for details."

I took a look at the changes across the different versions and found this PR:
#1646

It looks like that might be that change that caused the error I started observing. I was able to resolve my problem by downgrading back to 1.24.

To Reproduce
Steps to reproduce the behavior:
Try calling a datadog api client within a CF worker context. It's tail logs describe the error I shared.
(I can provide a repo which can be used to test if that's desired)

Expected behavior
I would like to expect that the latest datadog client continues to send requests in my cloudflare worker.

Screenshots
n/a

Environment and Versions (please complete the following information):
A clear and precise description of your setup:

handler: ExportedHandler = {
	fetch(request) {
		const logItems: HTTPLogItem[] = new Array<HTTPLogItem>();
		const conf = client.createConfiguration({
			authMethods: {
				apiKeyAuth: env?.["DD_API_KEY_SECRET"],
				appKeyAuth: env?.["DD_APP_KEY_SECRET"],
			},
		});
		const logsApi = new v2.LogsApi(conf);
		const params: v2.LogsApiSubmitLogRequest = {
			ddtags: "env:" + env?.["APP_ENV"],
			body: logItems,
		};
// This line throws
// vvvvvvvvvvvvvvvvvvvvv
		await logsApi.submitLog(params).catch((e) => {
// This log is recorded 100% of the time
			console.error("Error submitting logs to datadog", e);
		});
// ^^^^^^^^^^^^^^^^^^
		return new Response("OK");
	},
}

• version for this project in use.
  1.27 (but it looks like any version that is 1.26 or later)

• services, libraries, languages and tools list and versions.
  package.json:

{
	"name": "cloudflare-logger",
	"version": "0.0.0",
	"private": true,
	"dependencies": {
		"@cloudflare/workers-types": "^4.20240405.0",
		"@datadog/datadog-api-client": "1.27.0",
		"cloudflare": "^3.0.0",
		"tough-cookie": "^4.1.3",
		"zod": "^3.22.4"
	},
	"devDependencies": {
		"@babel/runtime": "^7.24.4",
		"@testing-library/jest-dom": "^6.4.2",
		"@types/jest": "^29.5.12",
		"@typescript-eslint/eslint-plugin": "^6.21.0",
		"eslint": "^8.57.0",
		"eslint-config-prettier": "^9.1.0",
		"eslint-config-standard-with-typescript": "^43.0.1",
		"eslint-plugin-import": "^2.29.1",
		"eslint-plugin-jest": "^27.9.0",
		"eslint-plugin-n": "^16.6.2",
		"eslint-plugin-prettier": "^5.1.3",
		"eslint-plugin-promise": "^6.1.1",
		"jest": "^29.7.0",
		"jest-axe": "^8.0.0",
		"jest-environment-jsdom": "^29.7.0",
		"jest-esm-transformer-2": "^1.0.0",
		"npm": "^10.5.2",
		"prettier": "^3.2.5",
		"ts-jest": "^29.1.2",
		"typescript": "^5.4.5",
		"wrangler": "^3.50.0"
	}
}

Additional context
I am guessing this has to do with the CF runtime releasing the this reference in the PR when the client attempts to make the fetch request call.

cc @linnea-moment

[matheusvellone]

I'm using dd-api-client on frontend with a proxy to my backend to proxy the requests.

When updating to 1.26.0 I started receiving this error on the frontend

An error occurred during the HTTP request: TypeError: Failed to execute 'fetch' on 'Window': Illegal invocation

I feel like this error is related to the one reported on this issue

[smartmike]

I have been running into the same issues on CF pages functions. I passed in a custom http client (fetch as an option didn't work) with .bind as per the help page, and it seems to be working.

// I'm not sure if this is the best way to import this...
import { IsomorphicFetchHttpLibrary } from '@datadog/datadog-api-client/dist/packages/datadog-api-client-common'
import { client } from '@datadog/datadog-api-client'

...

const httpApi = new IsomorphicFetchHttpLibrary({ fetch: fetch.bind(this) })
const config = client.createConfiguration({ httpApi })
const apiInstance = new v2.LogsApi(config)

...