/**
 * Utility functions for the Sunsama API wrapper
 */
export * from './validation.js';
export * from './conversion.js';
export * from './dates.js';
export * from './collab.js';
/**
 * Validates that a string is not empty
 *
 * @param value - The string to validate
 * @param fieldName - Name of the field (for error messages)
 * @throws {Error} If the string is empty or only whitespace
 */
export declare function validateNonEmptyString(value: string, fieldName: string): void;
/**
 * Validates that a number is positive
 *
 * @param value - The number to validate
 * @param fieldName - Name of the field (for error messages)
 * @throws {Error} If the number is not positive
 */
export declare function validatePositiveNumber(value: number, fieldName: string): void;
/**
 * Builds a URL with query parameters
 *
 * @param baseUrl - The base URL
 * @param params - Query parameters to append
 * @returns The complete URL with query string
 */
export declare function buildUrlWithParams(baseUrl: string, params?: Record<string, string | number | boolean>): string;
/**
 * Checks if a value is a plain object
 *
 * @param value - The value to check
 * @returns True if the value is a plain object
 */
export declare function isPlainObject(value: unknown): value is Record<string, unknown>;
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