v15.0.4-canary.4

Core Changes

• Fix the path to the next/experimental/testing/server export: #72527
• Expand server-source-maps scenarios to cover Edge runtime: #72288
• Ensure logged errors in Edge runtime include the stack: #72394

Misc Changes

• codemod(turbopack): Replace return Err(anyhow!()) with anyhow::bail!(): #72487

Credits

Huge thanks to @bgw, @mknichel, and @eps1lon for helping!