import { HttpParams } from '@angular/common/http';
import { SingHttpErrorResponse } from '../models/sing-http-response';
import { SingHttpMethods } from '../enums/sing-http-methods.enum';
import { SingHttpMetaData } from '../models/sing-http-meta-data.interface';
import { SingHttpOptions } from '../models/sing-http-request';
/**
 * get error message.
 * in case response contains errors, we will show them. otherwise 'Server error' will display
 * @param response
 */
export declare function getErrorMessage(response: SingHttpErrorResponse): string;
/**
 * create http params by get params object
 * in order to pass params in the new HttpClient we need to use the HttpParams
 * which helps us create the HttpParams object
 * @param params a simple shallow object with key value
 * @param allowEmptyQueryParams include empty or nullish query params
 * @returns {HttpParams} a new instance with the given params
 */
export declare function createHttpParams(params: any, allowEmptyQueryParams?: boolean): HttpParams;
/**
 * check if given method is GET method
 */
export declare function isGetMethod(method: SingHttpMethods): boolean;
/**
 * create options object
 */
export declare function createOptions(httpMetaData: SingHttpMetaData): SingHttpOptions;
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