[BUG] excludeRequestFromAutoTrackingPatterns values are not properly excluding dependencies

[vanpyrzericj]

Description/Screenshot It is my understanding that excludeRequestFromAutoTrackingPatterns can be used to exclude certain AJAX/XHR/Fetch requests (which show up as Dependencies in App Insights dashboards) from being tracked. I have several third-party analytics platforms that regularly send telemetry every few seconds, and are cluttering things up.

Steps to Reproduce Using the following configuration:

{
        instrumentationKey: '123123',
        autoTrackPageVisitTime: true,
        distributedTracingMode: DistributedTracingModes.W3C,
        correlationHeaderDomains: ['*.myappdomain.com'],
        disableFetchTracking: false,
        enableCorsCorrelation: true,
        enableAjaxPerfTracking: true,
        enableAjaxErrorStatusText: true,
        enableRequestHeaderTracking: true,
        enableResponseHeaderTracking: true,
        excludeRequestFromAutoTrackingPatterns: [/^((?!myappdomain).)*$/gm],
        correlationHeaderExcludePatterns: [/^((?!myappdomain).)*$/gm],
}

• OS/Browser: All
• SDK Version [e.g. 22]: 2.7.2
• How you initialized the SDK: pulling from npm, initializing in VueJS app

Expected behavior All requests that do NOT go to api.mydomain.com would be excluded in AI telemetry and do not show up as dependencies (being matched by the pattern of /^((?!stagehub).)*$/gm

Additional context Examples of calls that are being tracked (see screenshot above):

app.posthog.com
bam.nr-data.com
pub.highlight.run

I may be misunderstanding the difference between correlationHeaderDomains and correlationHeaderExcludePatterns

[MSNev]

Looking at your regex and the code that "excludes" the dependencies, I believe that this is correct. i.e. excludeRequestFromAutoTrackingPatterns means do not report matching entries as dependencies.

Are you using fetch or XHR requests?

This is where the code processes the provided config https://github.com/microsoft/ApplicationInsights-JS/blob/master/extensions/applicationinsights-dependencies-js/src/ajax.ts#L567-L576

Can you try debugging an unminified version of your VueJS App? as that would be useful to determine

• Is the config being initialized correctly (i.e. isit being passed down to this code)
• Is there something about how the request is being called that is causing the theUrl to not be the expected value.

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