diff --git a/packages/frontend-shared/cypress/e2e/e2ePluginSetup.ts b/packages/frontend-shared/cypress/e2e/e2ePluginSetup.ts
index fb8cbb5c8057..82d4c1d5ecf9 100644
--- a/packages/frontend-shared/cypress/e2e/e2ePluginSetup.ts
+++ b/packages/frontend-shared/cypress/e2e/e2ePluginSetup.ts
@@ -43,6 +43,11 @@ chai.use(chaiSubset)
 chai.use(sinonChai)
 
 export async function e2ePluginSetup (on: Cypress.PluginEvents, config: Cypress.PluginConfigOptions) {
+  // @ts-ignore snapshotAuxiliaryData is injected by the snapshot script
+  if (typeof global.snapshotAuxiliaryData === 'undefined') {
+    throw new Error('snapshotAuxiliaryData is undefined. v8 snapshots are not being used in Cypress in Cypress')
+  }
+
   process.env.CYPRESS_INTERNAL_E2E_TESTING_SELF = 'true'
   delete process.env.CYPRESS_INTERNAL_GRAPHQL_PORT
   delete process.env.CYPRESS_INTERNAL_VITE_DEV