/**
 * Helper function to determine if an object is a function call with an aggregate function
 */
export declare function isAggregateFunctionCall(obj: any): boolean;
/**
 * Helper function to determine if an object is an ORDER_INDEX function call
 */
export declare function isOrderIndexFunctionCall(obj: any): boolean;
/**
 * Type guard to check if a value is comparable (can be used with <, >, <=, >= operators)
 * @param value The value to check
 * @returns True if the value is comparable
 */
export declare function isComparable(value: unknown): value is number | string | Date | boolean;
/**
 * Performs a comparison between two values, ensuring they are of compatible types
 * @param left The left operand
 * @param right The right operand
 * @param operator The comparison operator
 * @returns The result of the comparison
 * @throws Error if the values are not comparable
 */
export declare function compareValues(left: unknown, right: unknown, operator: `<` | `<=` | `>` | `>=`): boolean;
/**
 * Converts a SQL LIKE pattern to a JavaScript regex pattern
 * @param pattern The SQL LIKE pattern to convert
 * @returns A regex-compatible pattern string
 */
export declare function convertLikeToRegex(pattern: string): string;
/**
 * Helper function to check if a value is in an array, with special handling for various types
 * @param value The value to check for
 * @param array The array to search in
 * @param caseInsensitive Optional flag to enable case-insensitive matching for strings (default: false)
 * @returns True if the value is found in the array
 */
export declare function isValueInArray(value: unknown, array: Array<unknown>, caseInsensitive?: boolean): boolean;