in src/requestTracing/utils.ts [211:218]
export function isBrowser() {
// https://developer.mozilla.org/en-US/docs/Web/API/Window
const isWindowDefinedAsExpected = typeof window === "object" && typeof Window === "function" && window instanceof Window;
// https://developer.mozilla.org/en-US/docs/Web/API/Document
const isDocumentDefinedAsExpected = typeof document === "object" && typeof Document === "function" && document instanceof Document;
return isWindowDefinedAsExpected && isDocumentDefinedAsExpected;
}