import type { IExecuteFunctions, IDataObject, IHttpRequestMethods } from 'n8n-workflow';
export declare function getCpaHeaders(this: IExecuteFunctions, itemIndex: number): IDataObject;
export declare function cpaApiRequest<T extends IDataObject = IDataObject>(this: IExecuteFunctions, method: IHttpRequestMethods, endpoint: string, body: IDataObject | string | undefined, itemIndex: number): Promise<T>;
export declare function validatePositiveInteger(context: IExecuteFunctions, itemIndex: number, fieldName: string, value: number, maxValue?: number): void;
export declare function validateNonNegativeInteger(context: IExecuteFunctions, itemIndex: number, fieldName: string, value: number): void;
export declare function validateRequiredString(context: IExecuteFunctions, itemIndex: number, fieldName: string, value: string): string;
export declare function validateDateTime(context: IExecuteFunctions, itemIndex: number, fieldName: string, value: string): string;