Platform code, ahead of time

0pillowHttp_stub.dart

import 'package:http/http.dart' as http;

http.Client getClient() {
  throw UnimplementedError('Unsupported');
}

1pillowHttp_app.dart

import 'package:http/http.dart' as http;

http.Client getClient() {
  return http.Client();
}

2pillowHttp_web.dart

import 'package:http/browser_client.dart';
import 'package:http/http.dart' as http;

http.Client getClient() {
  final client = http.Client();
  (client as BrowserClient).withCredentials = true;
  return client;
}

3useTheAbove.dart

import 'pillowHttp/pillowHttp_stub.dart'
    if (dart.library.io) 'pillowHttp/pillowHttp_app.dart'
    if (dart.library.html) 'pillowHttp/pillowHttp_web.dart';

//Further code ...