@grafana/faro-web-tracing/dist/esm/faroXhrInstrumentation.js

Faro web tracing implementation.

import { XMLHttpRequestInstrumentation } from '@opentelemetry/instrumentation-xml-http-request';
export class FaroXhrInstrumentation extends XMLHttpRequestInstrumentation {
    constructor(config = {}) {
        super(config);
        const self = this;
        this.parentCreateSpan = self._createSpan.bind(this);
    }
    // Patching the parent's private method to handle url type string or URL
    _patchOpen() {
        return (original) => {
            const plugin = this;
            return function patchOpen(...args) {
                const method = args[0];
                let url = args[1];
                if (isInstanceOfURL(url)) {
                    url = url.href;
                }
                plugin.parentCreateSpan(this, url, method);
                return original.apply(this, args);
            };
        };
    }
}
function isInstanceOfURL(item) {
    return item instanceof URL;
}
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