File fetch.test.ts

packages/browser/test/transports/fetch.test.ts:None–None

import type { EventEnvelope, EventItem } from '@sentry/core/browser';
import { createEnvelope, serializeEnvelope } from '@sentry/core/browser';
import type { Mock } from 'vitest';
import { afterEach, describe, expect, it, vi } from 'vitest';