Function getTruncatedJsonString

packages/core/src/tracing/ai/utils.ts:211–223

(value: T | T[])

 * @returns The truncated JSON string
 */
export function getTruncatedJsonString<T>(value: T | T[]): string {
  if (typeof value === 'string') {
    // Some values are already JSON strings, so we don't need to duplicate the JSON parsing
    return truncateGenAiStringInput(value);
  }
  if (Array.isArray(value)) {
    // truncateGenAiMessages returns an array of strings, so we need to stringify it
    const truncatedMessages = truncateGenAiMessages(value);
    return JSON.stringify(truncatedMessages);
  }
  // value is an object, so we need to stringify it
  return JSON.stringify(value);
}

/**
 * Extract system instructions from messages array.