majiayu000/claude-arsenal
xiaohongshu
xiaohongshu
286 148
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Crash Instrumentation
crash-instrumentation
Set up crash instrumentation with actionable context. Use when configuring crash capture, error boundaries, or breadcrumb strategies.
SKILL.md
Full skill instructions
Crash Instrumentation
Capture crashes with the context needed to debug them.
Core Principle
A crash report without context is useless. Every crash should include:
| Context | Why | Example |
|---|---|---|
screen | Where it happened | "CheckoutScreen" |
job_name | What user was doing | "checkout" |
job_step | Where in the flow | "payment" |
breadcrumbs | What led here | Last 20 user actions |
app_version | Release correlation | "1.2.3" |
user_segment | Who's affected | "premium", "trial" |
Breadcrumb Strategy
Breadcrumbs are the trail leading to a crash. Capture:
| Category | What to Log | Example |
|---|---|---|
navigation | Screen transitions | "HomeScreen → CartScreen" |
user | Taps, inputs, gestures | "Tapped checkout button" |
network | API calls (not payloads) | "POST /api/orders started" |
state | Key state changes | "Cart updated: 3 items" |
error | Non-fatal errors | "Retry #2 for payment" |
Limit: Keep last 20-50 breadcrumbs. More is noise.
Error Boundaries
Catch errors before they crash the app:
// iOS - capture context before crash
func captureError(_ error: Error, screen: String, job: String?) {
Observability.captureError(error, context: [
"screen": screen,
"job_name": job ?? "unknown",
"session_duration": sessionDuration(),
"memory_pressure": memoryPressure()
])
}
// Android - uncaught exception handler
Thread.setDefaultUncaughtExceptionHandler { thread, throwable ->
Observability.captureError(throwable, mapOf(
"thread" to thread.name,
"screen" to currentScreen,
"job_name" to currentJob
))
previousHandler?.uncaughtException(thread, throwable)
}
What NOT to Attach
| Don't | Why |
|---|---|
| Full stack traces in breadcrumbs | Redundant, SDK captures this |
| User input text | PII risk |
| Full request/response bodies | Size limits, PII |
| Entire app state | Unbounded, noise |
Crash Types to Handle
| Platform | Type | Instrumentation |
|---|---|---|
| iOS | EXC_BAD_ACCESS | Breadcrumbs, memory context |
| iOS | SIGKILL (watchdog) | Background task tracking |
| Android | ANR | Main thread breadcrumbs |
| Android | OutOfMemoryError | Memory tracking |
| React Native | JS exceptions | Error boundaries |
Implementation
See references/crash-reporting.md for:
- Platform-specific crash capture setup
- Breadcrumb implementation patterns
- Vendor SDK configuration
See skills/symbolication-setup for readable stack traces.
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