microsoft / microsoft/ApplicationInsights-JS

Chrome: Deprecation - Unload event listeners are deprecated and will be removed

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Dominant language
TypeScript
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Forks
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Merged PRs (30d)
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Description

Description/Screenshot
Chrome indicates an issue when using @microsoft/applicationinsights-web version 3.0.6.

"Deprecated feature used"
"Unload event listeners are deprecated and will be removed."

image

Steps to Reproduce

  • OS/Browser:
    22.0.6170.5 (Official Build) dev (64-bit) (cohort: Dev)
    Windows 11 Version 22H2 (Build 22621.2428)
  • SDK Version [e.g. 22]:
    @microsoft/applicationinsights-web version 3.0.6
  • How you initialized the SDK:
import { ApplicationInsights } from "@microsoft/applicationinsights-web";
import { isNullOrWhitespace } from "../data";

let initialized = false;
let appInsights: ApplicationInsights | null;

export function aiInit(
    connectionString: string,
    appName: string,
    userName?: string) {

    if (initialized) {
        console.log("Telemetry already initialized");
        return;
    }

    appInsights = new ApplicationInsights({
        config: {
            connectionString: connectionString,
            maxBatchInterval: 0,
            disableFetchTracking: false
        }
    });
    appInsights.loadAppInsights();

    const userNameProvided = !isNullOrWhitespace(userName);
    if (userNameProvided) {
        appInsights.setAuthenticatedUserContext(userName!, undefined, true);
    }

    appInsights.addTelemetryInitializer(envelope => {
        if (envelope.tags != null) {
            envelope.tags["ai.cloud.role"] = appName;
            if (userNameProvided) {
                envelope.tags["ai.user.id"] = userName!;
            }
        }
    });

    appInsights.trackPageView();

    initialized = true;
}

export function ai(): ApplicationInsights {
    if (!initialized || appInsights == null) {
        throw new Error("Telemetry not initialized");
    }
    return appInsights;
}

Expected behavior
No issue

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the warning with @microsoft/applicationinsights-web 3.0.6 in the Chrome version and initialization flow shown, especially loadAppInsights(). Trace which SDK path registers the unload listener. Done means the reported deprecation warning no longer appears while the expected telemetry behavior remains intact.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
observability
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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