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Scopes: ${Array.isArray(scope) ? scope.join(\", \") : scope}.`;\n}\n\n/**\n * Formatting the success event on the credentials\n */\nexport function formatError(scope: string | string[] | undefined, error: Error | string): string {\n  let message = \"ERROR.\";\n  if (scope?.length) {\n    message += ` Scopes: ${Array.isArray(scope) ? scope.join(\", \") : scope}.`;\n  }\n  return `${message} Error message: ${typeof error === \"string\" ? error : error.message}.`;\n}\n\n/**\n * A CredentialLoggerInstance is a logger properly formatted to work in a credential's constructor, and its methods.\n */\nexport interface CredentialLoggerInstance {\n  title: string;\n  fullTitle: string;\n  info(message: string): void;\n  warning(message: string): void;\n  /**\n   * The logging functions for warning and error are intentionally left out, since we want the identity logging to be at the info level.\n   * Otherwise, they would look like:\n   *\n   *   warning(message: string): void;\n   *   error(err: Error): void;\n   */\n}\n\n/**\n * Generates a CredentialLoggerInstance.\n *\n * It logs with the format:\n *\n *   `[title] => [message]`\n *\n */\nexport function credentialLoggerInstance(\n  title: string,\n  parent?: CredentialLoggerInstance,\n  log: AzureLogger = logger\n): CredentialLoggerInstance {\n  const fullTitle = parent ? `${parent.fullTitle} ${title}` : title;\n\n  function info(message: string): void {\n    log.info(`${fullTitle} =>`, message);\n  }\n\n  function warning(message: string): void {\n    log.warning(`${fullTitle} =>`, message);\n  }\n  return {\n    title,\n    fullTitle,\n    info,\n    warning,\n  };\n}\n\n/**\n * A CredentialLogger is a logger declared at the credential's constructor, and used at any point in the credential.\n * It has all the properties of a CredentialLoggerInstance, plus other logger instances, one per method.\n */\nexport interface CredentialLogger extends CredentialLoggerInstance {\n  parent: AzureLogger;\n  getToken: CredentialLoggerInstance;\n}\n\n/**\n * Generates a CredentialLogger, which is a logger declared at the credential's constructor, and used at any point in the credential.\n * It has all the properties of a CredentialLoggerInstance, plus other logger instances, one per method.\n *\n * It logs with the format:\n *\n *   `[title] => [message]`\n *   `[title] => getToken() => [message]`\n *\n */\nexport function credentialLogger(title: string, log: AzureLogger = logger): CredentialLogger {\n  const credLogger = credentialLoggerInstance(title, undefined, log);\n  return {\n    ...credLogger,\n    parent: log,\n    getToken: credentialLoggerInstance(\"=> getToken()\", credLogger, log),\n  };\n}\n"]}