fix(types): improve types for Twilio Functions

packages/serverless-runtime-types/index.d.ts

@@ -1,13 +1,24 @@
-import { RuntimeInstance, TwilioResponse, GlobalTwilio } from './types';
+import * as twilio from 'twilio';
+import {
+  GlobalTwilio,
+  ResourceMap,
+  ResponseConstructor,
+  RuntimeInstance,
+} from './types';
 
 declare global {
   var Twilio: GlobalTwilio;
   var Runtime: RuntimeInstance;
+  var Functions: ResourceMap;
+  var twilioClient: null | twilio.Twilio;
 
   namespace NodeJS {
     interface Global {
       Twilio: GlobalTwilio;
       Runtime: RuntimeInstance;
+      Functions: ResourceMap;
+      Response: ResponseConstructor;
+      twilioClient: null | twilio.Twilio;
     }
   }
 }

packages/serverless-runtime-types/types.d.ts

@@ -1,5 +1,6 @@
 import * as twilio from 'twilio';
 import { ServiceContext } from 'twilio/lib/rest/sync/v1/service';
+import { TwilioClientOptions } from 'twilio/lib/rest/Twilio';
 
 export type EnvironmentVariables = {
   [key: string]: string | undefined;
@@ -11,17 +12,28 @@ export type ResourceMap = {
   };
 };
 
+export type AssetResourceMap = {
+  [name: string]: {
+    path: string;
+    open(): string;
+  };
+};
+
 export interface TwilioResponse {
   setStatusCode(code: number): void;
   setBody(body: string | object): void;
   appendHeader(key: string, value: string): void;
   setHeaders(headers: { [key: string]: string }): void;
 }
 
+export type RuntimeSyncClientOptions = TwilioClientOptions & {
+  serviceName?: string;
+};
+
 export type RuntimeInstance = {
-  getAssets(): ResourceMap;
+  getAssets(): AssetResourceMap;
   getFunctions(): ResourceMap;
-  getSync(config?: { serviceName: string }): ServiceContext;
+  getSync(options?: RuntimeSyncClientOptions): ServiceContext;
 };
 
 export type Context<T = {}> = {