Export universal CreateBody types

src/body/universal.ts

@@ -2,13 +2,19 @@ import { Readable } from 'stream' // tslint:disable-line
 import { createBody as createNodeBody, CreateBody as CreateNodeBody, Body as NodeBody } from './node'
 import { CreateBody as CreateBrowserBody, Body as BrowserBody } from './browser'
 
-export { NodeBody as Body }
+/**
+ * Export mapped `Body` (e.g. `NodeBody` or `BrowserBody`).
+ */
+export { NodeBody as Body, NodeBody, BrowserBody }
 
-export type CreateBodyFn = (value?: CreateNodeBody | CreateBrowserBody) => NodeBody | BrowserBody
+/**
+ * Supported `CreateBody` types.
+ */
+export type CreateBody = CreateNodeBody | CreateBrowserBody
 
 /**
  * This function is changed at bundle time by tools like Browserify to
  * `./browser`. Unfortunately TypeScript doesn't support this so we do an
  * interesting hack by intersecting the valid return classes.
  */
-export const createBody: CreateBodyFn = createNodeBody
+export const createBody: (value?: CreateBody) => NodeBody | BrowserBody = createNodeBody