import { QueryParams } from '../types';
/**
 * Validates that all required fields are present in the data object
 */
export declare function validateRequired<T extends Record<string, unknown>>(data: T, requiredFields: string[]): void;
/**
 * Validates a date range for API requests
 */
export declare function validateDateRange(startTime: string, endTime: string): void;
/**
 * Validates budget amount in micro currency units
 */
export declare function validateBudget(amount: number, minAmount?: number): void;
/**
 * Validates string length
 */
export declare function validateStringLength(value: string, field: string, maxLength?: number): void;
/**
 * Removes undefined and null values from parameters
 */
export declare function sanitizeParams<T extends Record<string, unknown>>(params: T): T;
/**
 * Builds query string from parameters object
 */
export declare function buildQueryString(params: QueryParams): string;
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