Add Python Emitter to Azure Playground

website/src/components/playground-component/import-map.ts

@@ -9,10 +9,41 @@ export interface ImportMap {
   imports: Record<string, string>;
 }
 
+const pkgsBaseUrl = "https://typespec.blob.core.windows.net/pkgs";
+
+async function fetchAdditionalPackageImports(
+  packageNames: readonly string[],
+): Promise<Record<string, string>> {
+  const imports: Record<string, string> = {};
+
+  const results = await Promise.allSettled(
+    packageNames.map(async (name) => {
+      const url = `${pkgsBaseUrl}/${name}/latest.json`;
+      const response = await fetch(url);
+      if (!response.ok) {
+        // eslint-disable-next-line no-console
+        console.warn(`Failed to load latest index for ${name}: ${response.status}`);
+        return undefined;
+      }
+      return JSON.parse(await response.text()) as ImportMap;
+    }),
+  );
+
+  for (const result of results) {
+    if (result.status === "fulfilled" && result.value) {
+      Object.assign(imports, result.value.imports);
+    }
+  }
+
+  return imports;
+}
+
 export async function loadImportMap({
   latestVersion,
+  additionalPackages = [],
 }: {
   latestVersion: string;
+  additionalPackages?: readonly string[];
 }): Promise<VersionData> {
   const optionsScript = document.querySelector("script[type=playground-options]");
   if (optionsScript === undefined) {
@@ -24,15 +55,19 @@ export async function loadImportMap({
   const parsed = new URLSearchParams(window.location.search);
 
   const requestedVersion = parsed.get("version");
-  const importMapUrl = `https://typespec.blob.core.windows.net/pkgs/indexes/azure/${
-    requestedVersion ?? latestVersion
-  }.json`;
+  const importMapUrl = `${pkgsBaseUrl}/indexes/azure/${requestedVersion ?? latestVersion}.json`;
 
-  const response = await fetch(importMapUrl);
-  const content = await response.text();
+  const [mainResponse, additionalImports] = await Promise.all([
+    fetch(importMapUrl),
+    fetchAdditionalPackageImports(additionalPackages),
+  ]);
+  const content = await mainResponse.text();
 
   const importMap = JSON.parse(content);
 
+  // Merge additional imports into the main import map
+  Object.assign(importMap.imports, additionalImports);
+
   (window as any).importShim.addImportMap(importMap);
 
   return {

website/src/components/react-pages/playground.tsx

@@ -3,6 +3,8 @@ import "@typespec/playground/styles.css";
 import { useEffect, useState, type ReactNode } from "react";
 import { loadImportMap, type VersionData } from "../playground-component/import-map";
 
+const additionalPlaygroundPackages = ["@typespec/http-client-python"];
+
 export const AsyncPlayground = ({
   latestVersion,
   fallback,
@@ -15,7 +17,10 @@ export const AsyncPlayground = ({
     WebsitePlayground: typeof import("../playground-component/playground").WebsitePlayground;
   }>(undefined as any);
   useEffect(() => {
-    Promise.all([loadImportMap({ latestVersion }), import("../playground-component/playground")])
+    Promise.all([
+      loadImportMap({ latestVersion, additionalPackages: additionalPlaygroundPackages }),
+      import("../playground-component/playground"),
+    ])
       .then((x) => setMod({ versionData: x[0] as any, WebsitePlayground: x[1].WebsitePlayground }))
       .catch((e) => {
         throw e;