fix-errors

SKILL.md

When fixing an unhandled error from the telemetry dashboard, the issue typically contains an error message, a stack trace, hit count, and affected user count.

Approach

1. Do NOT fix at the crash site

The error manifests at a specific line in the stack trace, but the fix almost never belongs there. Fixing at the crash site (e.g., adding a typeof guard in a revive() function, swallowing the error with a try/catch, or returning a fallback value) only masks the real problem. The invalid data still flows through the system and will cause failures elsewhere.

2. Trace the data flow upward through the call stack

Read each frame in the stack trace from bottom to top. For each frame, understand:

What data is being passed and what is expected

Where that data originated (IPC message, extension API call, storage, user input, etc.)

Whether the data could have been corrupted or malformed at that point

The goal is to find the producer of invalid data, not the consumer that crashes on it.

3. When the producer cannot be identified from the stack alone