Add .js extensions to runner imports to produce valid esm (#46)

Author: andrewMacmurray

runner/browser/dom.ts

@@ -4,7 +4,7 @@ import {
   DomError,
   SetViewportOptions,
   SetViewportOfOptions,
-} from "browser";
+} from "./index.js";
 
 // Relevant Elm Kernel code: https://github.com/elm/browser/blob/master/src/Elm/Kernel/Browser.js#L322-L328
 // Note: `focus` is called using `Elm.Kernel.Browser.call "focus"`

runner/http/fetch.ts

@@ -1,4 +1,4 @@
-import { HttpResponse, HttpRequest, HttpError } from "./index";
+import { HttpResponse, HttpRequest, HttpError } from "./index.js";
 
 export function http(request: HttpRequest): Promise<HttpResponse> {
   let controller: AbortController | undefined;

runner/index.ts

@@ -1,16 +1,16 @@
-import { HttpRequest, HttpResponse } from "./http";
-import * as fetchAdapter from "./http/fetch";
+import { HttpRequest, HttpResponse } from "./http/index.js";
+import * as fetchAdapter from "./http/fetch.js";
 import {
   DomError,
   DomElement,
   Viewport,
   SetViewportOptions,
   SetViewportOfOptions,
-} from "./browser";
-import * as dom from "./browser/dom";
+} from "./browser/index.js";
+import * as dom from "./browser/dom.js";
 
-export * from "./http";
-export * from "./browser";
+export * from "./http/index.js";
+export * from "./browser/index.js";
 
 export interface ElmPorts {
   send: {