import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import {CommonModule} from "@angular/common";
import {FormsModule} from "@angular/forms";
import {HttpWrapperService} from "./HttpWrapper/http-wrapper.service";
import {HttpClientModule} from "@angular/common/http";
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    CommonModule,
    FormsModule,
    HttpClientModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

providers:[HttpWrapperService]

providers:[HttpWrapperService, HttpErrorHandlerService]

import { HTTP_INTERCEPTORS } from '@angular/common/http';
import {AuthInterceptorService} from "./HttpWrapper/auth-interceptor.service";

providers: [{
    provide: HTTP_INTERCEPTORS,
    useClass: AuthInterceptorService,
    multi: true
  }]

let headers = new HttpHeaders();
headers = headers.append("HeaderName", "HeaderValue");
headers = headers.append("HeaderName", "HeaderValue");

let params = new HttpParams();
params = params.append("ParamName", "ParamValue");
params = params.append("ParamName", "ParamValue");

this.httpWrapper.get(URL, OPTIONS);
Example:
this.httpWrapper.get("https://example.com/getData", {headers:headers,params:params});

this.httpWrapper.post(URL, OPTIONS);
Example:
this.httpWrapper.post("https://example.com/getData", {headers:headers,params:params, body:body});

this.httpWrapper.put(URL, OPTIONS);
Example:
this.httpWrapper.put("https://example.com/getData", {headers:headers,params:params, body:body});

this.httpWrapper.delete(URL, OPTIONS);

this.httpWrapper.delete("https://example.com/getData", {headers:headers,params:params, body:body});