Use export type for exporting Fetch API types (#444)

esbuild requires we enable the TypeScript `isolatedModules` option.
This requires us to be explicit when `export`ing types.
`export`ing `from "undici"` also means we don't have to duplicate
these types in `import`s.

Author: mrbbot

packages/tre/src/index.ts

@@ -6,25 +6,11 @@ import exitHook from "exit-hook";
 import getPort from "get-port";
 import stoppable from "stoppable";
 import {
-  BodyInit,
-  File,
-  FormData,
-  Headers,
   HeadersInit,
-  ReferrerPolicy,
   Request,
-  RequestCache,
-  RequestCredentials,
-  RequestDestination,
-  RequestDuplex,
   RequestInfo,
   RequestInit,
-  RequestMode,
-  RequestRedirect,
   Response,
-  ResponseInit,
-  ResponseRedirectStatus,
-  ResponseType,
   fetch,
 } from "undici";
 import { WebSocketServer } from "ws";
@@ -628,14 +614,11 @@ export * from "./plugins";
 export * from "./runtime";
 export * from "./shared";
 export * from "./storage";
-export {
+export { File, FormData, Headers, Request, Response, fetch } from "undici";
+export type {
   BodyInit,
-  File,
-  FormData,
-  Headers,
   HeadersInit,
   ReferrerPolicy,
-  Request,
   RequestCache,
   RequestCredentials,
   RequestDestination,
@@ -644,9 +627,7 @@ export {
   RequestInit,
   RequestMode,
   RequestRedirect,
-  Response,
   ResponseInit,
   ResponseRedirectStatus,
   ResponseType,
-  fetch,
-};
+} from "undici";