feat: retry count in url (#864)

During an incident we are sometimes flooded with retries from the JS SDK.

Or at least we believe we are. And, when we are we don't know how many retries there are.

Let's add the retry count to the URL so we can figure things out by inspecting the capture logs

Tested locally that I can still ingest events etc

.github/workflows/testcafe.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     strategy:
-      matrix: 
+      matrix:
         browserstack:
           - chrome
           - ie

cypress/support/e2e.js

@@ -21,6 +21,7 @@ import 'given2/setup'
 // require('./commands')
 
 // Add console errors into cypress logs.
+// eslint-disable-next-line no-undef
 Cypress.on('window:before:load', (win) => {
     cy.spy(win.console, 'error')
     cy.spy(win.console, 'warn')

src/__tests__/__snapshots__/posthog-core.js.snap

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`__compress_and_send_json_request handles base64 compression 1`] = `
+exports[`posthog core __compress_and_send_json_request handles base64 compression 1`] = `
 Array [
   Array [
     "/e/",

src/__tests__/extensions/exception-autocapture/error-conversion.test.ts

@@ -5,7 +5,8 @@ import {
     ErrorProperties,
     unhandledRejectionToProperties,
 } from '../../../extensions/exception-autocapture/error-conversion'
-import { _isNull } from '../../../utils'
+
+import { _isNull } from '../../../utils/type-utils'
 
 // ugh, jest
 // can't reference PromiseRejectionEvent to construct it 🤷

src/__tests__/gdpr-utils.js

@@ -1,7 +1,8 @@
 import sinon from 'sinon'
 
 import * as gdpr from '../gdpr-utils'
-import { _isNull } from '../utils'
+
+import { _isNull } from '../utils/type-utils'
 
 const TOKENS = [
     `test-token`,