React Native Firebase Crashlytics日志堆栈追踪不可读问题咨询

Hey there! Let's sort out this issue you're having with Crashlytics error recording in React Native Firebase v6. First off—this is not expected behavior; you shouldn't be getting empty or unhelpful error logs when using recordError() correctly. The problem likely stems from how JavaScript error objects are bridged to the native Crashlytics SDK, which can cause stack traces or error details to get lost in translation.

Why Your Current Approaches Fall Short #

• When you pass the raw caught error directly to recordError(), the native SDK often can't parse the JS error's stack trace properly, leaving you with no line numbers or context about where the error occurred.
• When you create a new Error('The error description'), you get a usable stack trace but lose all the critical details from the original error (like error codes, custom properties, or specific messages that tell you what went wrong).

The Best of Both Worlds: A Fix That Preserves Context #

You can combine both approaches to keep the original error details and get a valid stack trace. Here are two solid options:

Option 1: Wrap the Error with Full Context

Create a new Error that includes the original error's message and details, then attach the original stack trace:

catch (error) {
  // Build an error message that includes the original error's details
  const detailedErrorMessage = error.message 
    ? `${error.message} | Raw Error: ${JSON.stringify(error)}`
    : `Unknown JavaScript Error | Raw Error: ${JSON.stringify(error)}`;
  
  const errorForCrashlytics = new Error(detailedErrorMessage);
  // Attach the original stack trace if it exists
  if (error.stack) {
    errorForCrashlytics.stack = error.stack;
  }

  firebase.crashlytics().recordError(errorForCrashlytics);
}

Option 2: Use Custom Values to Preserve Raw Error Details

Use Crashlytics' custom value feature to store the full original error, then record a simplified error with the correct stack trace:

catch (error) {
  // Save the raw error details as a custom Crashlytics value
  firebase.crashlytics().setCustomValue('raw_js_error', JSON.stringify(error));
  
  // Create a new error with the original message and stack
  const traceableError = new Error(error.message || 'Uncaught JS Error');
  traceableError.stack = error.stack;

  firebase.crashlytics().recordError(traceableError);
}

This way, when you view the crash in the Firebase Console, you'll see the stack trace for debugging location, and you can check the "Custom Keys" section to see the full original error details.

Quick Check: Ensure Proper Initialization #

Double-check that Crashlytics is enabled in your app setup:

• For iOS: Make sure FirebaseCrashlyticsCollectionEnabled is set to YES in your Info.plist (even in debug mode, if you want to test crash reporting).
• For Android: Verify that the Crashlytics Gradle plugin is applied in your build.gradle files, and that collection isn't disabled programmatically.

Glad to hear you're enjoying the React Native Firebase experience overall— the team has put in tons of work to make it solid!

内容的提问来源于stack exchange，提问作者DowntownDev