[OpenTelemetry Web] Uncaught ReferenceError: window is not defined

[GideonCheruiyot]

Getting an uncaught reference error from this file:, which called by config.ts. What are some scenarios where window would be undefined?

I am using the following opentelemetry packages:

    "@opentelemetry/context-zone": "^0.17.0",
    "@opentelemetry/exporter-collector": "^0.17.0",
    "@opentelemetry/exporter-zipkin": "^0.17.0",
    "@opentelemetry/plugin-document-load": "^0.13.1",
    "@opentelemetry/tracing": "^0.17.0",
    "@opentelemetry/web": "^0.17.0",

Update: Looks like the issue happens when running the app in a service worker, and since web workers do not have DOM elements, both window and document that are used in opentelemetryweb would raise the undefined error when inside a service worker.

Added a hack to the serviceworker so as not to get this error:

if (typeof window === 'undefined') {
    (globalThis as any).window = globalThis;
}

if (typeof document === 'undefined') {
    (globalThis as any).document =
    {
        createElement(tagName: string) {
            if (tagName === 'a') {
                return new URL(location.href);
            }
        }
    };
}

Wondering if there could be a patch to support this scenario.

[dyladan]

Can you please provide more information? What browser version are you using? What opentelemetry packages are you using (with versions)? Paste your setup code and if possible a small code sample to reproduce the problem.

[GideonCheruiyot]

Hi @dyladan, updated the description. Couldnt really repro the issue in smaller simple apps however.