TBag

import { HttpClient, IHttpClientOptions, HttpClientResponse } from '@microsoft/sp-http';

private makeRequest(value1: string, value2: string, value3: string): Promise<HttpClientResponse> {

  const postURL = "https://REST-API-URL";

  const body: string = JSON.stringify({
    'name1': value1,
    'name2': value2,
    'name3': value3,