/**
 * Determines whether payload data should be captured based on the capture mode setting,
 * HTTP status code, and GraphQL error status.
 * @param {string} captureMode - The capture mode setting ('none', 'all', or 'failures')
 * @param {number} statusCode - The HTTP status code
 * @param {boolean} hasGQLErrors - Whether the response contains GraphQL errors
 * @returns {boolean} True if payload should be captured
 */
export function canCapturePayload(captureMode: string, statusCode: number, hasGQLErrors: boolean): boolean;
/**
 * Parses a query string into an object of key-value pairs.
 * @param {string} search a query string starting with "?" or without (ex. new URL(...).search)
 * @returns {Object|undefined} Parsed query parameters as key-value pairs. Returns undefined if no valid parameters are found.
 */
export function parseQueryString(search: string): Object | undefined;
/**
 * Determines if the given content type is likely to be human-readable (text-based).
 * @param {Object} headers - The headers object containing content-type
 * @param {*} data - The data to check
 * @returns {boolean} True if the content type is human-readable (text-based)
 */
export function isLikelyHumanReadable(headers: Object, data: any): boolean;
/**
 * Truncates a string to ensure its UTF-8 byte length does not exceed 4092 bytes.  If truncation is necessary,
 * the string is cut off at a character boundary to avoid breaking multi-byte characters and " ..." is appended to indicate truncation.
 * If not a string, it is first converted to a string using JSON.stringify.
 * @param {*} data The data to truncate.
 * @returns {string}
 */
export function truncateAsString(data: any): string;
/**
 * Creates string adder functions for BEL serialization with obfuscation and optional truncation.
 * This ensures a single string table is used while providing separate handling for regular vs payload attributes.
 * @param {Function} getAddStringContext - Function that creates a new string table context
 * @param {Object} obfuscator - Optional obfuscator instance for string obfuscation
 * @returns {{addString: Function, addStringWithTruncation: Function}} Object containing both string adder functions
 */
export function createStringAdders(getAddStringContext: Function, obfuscator: Object): {
    addString: Function;
    addStringWithTruncation: Function;
};
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