feat(gatsby): add prefetchPathname the public api (#13985)

Author: andrewagain

packages/gatsby/cache-dir/gatsby-browser-entry.js

@@ -10,6 +10,7 @@ import Link, {
   parsePath,
 } from "gatsby-link"
 import PageRenderer from "./public-page-renderer"
+import { enqueue as prefetchPathname } from "./loader"
 
 const StaticQueryContext = React.createContext({})
 
@@ -95,4 +96,5 @@ export {
   StaticQuery,
   PageRenderer,
   useStaticQuery,
+  prefetchPathname,
 }

packages/gatsby/index.d.ts

@@ -23,6 +23,8 @@ export const useStaticQuery: <TData = any>(query: any) => TData
 
 export const parsePath: (path: string) => WindowLocation
 
+export const prefetchPathname: (path: string) => void
+
 export interface PageRendererProps {
   location: WindowLocation
 }