Function getFunctionName

packages/core/src/utils/stacktrace.ts:133–144

(fn: unknown)

 * Safely extract function name from itself
 */
export function getFunctionName(fn: unknown): string {
  try {
    if (!fn || typeof fn !== 'function') {
      return defaultFunctionName;
    }
    return fn.name || defaultFunctionName;
  } catch {
    // Just accessing custom props in some Selenium environments
    // can cause a "Permission denied" exception (see raven-js#495).
    return defaultFunctionName;
  }
}

/**
 * Get's stack frames from an event without needing to check for undefined properties.