@clerk/testing: clerkSetup() doesn't fall back to NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY

[joerizz23]

Description

clerkSetup() from @clerk/testing/playwright requires the env var CLERK_PUBLISHABLE_KEY to be set. However, the standard Next.js convention (and what @clerk/nextjs uses) is NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY. This forces developers to pass both env vars explicitly when running tests.

Environment

• @clerk/testing: 1.13.36
• @clerk/nextjs: latest
• @playwright/test: 1.57.0
• Next.js: 15.4.11

Reproduction

1. Configure a Next.js app with Clerk using NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY in .env.local (standard setup)
2. Set up Playwright with @clerk/testing
3. Run tests without explicitly setting CLERK_PUBLISHABLE_KEY
4. clerkSetup() fails because it only looks for CLERK_PUBLISHABLE_KEY

Workaround

Must pass both env vars when running tests:

CLERK_PUBLISHABLE_KEY=$NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY \
NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_xxx \
npx playwright test

Expected Behavior

clerkSetup() should fall back to NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY if CLERK_PUBLISHABLE_KEY is not set, since that's the standard env var name used in Next.js projects with @clerk/nextjs.

Suggested Fix

In the clerkSetup() initialization:

const publishableKey = process.env.CLERK_PUBLISHABLE_KEY 
  ?? process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY;