Function stripProtoFields

src/services/analytics/index.ts:45–58

(
  metadata: Record<string, V>,
)

 * Returns the input unchanged (same reference) when no _PROTO_ keys present.
 */
export function stripProtoFields<V>(
  metadata: Record<string, V>,
): Record<string, V> {
  let result: Record<string, V> | undefined
  for (const key in metadata) {
    if (key.startsWith('_PROTO_')) {
      if (result === undefined) {
        result = { ...metadata }
      }
      delete result[key]
    }
  }
  return result ?? metadata
}

// Internal type for logEvent metadata - different from the enriched EventMetadata in metadata.ts
type LogEventMetadata = { [key: string]: boolean | number | undefined }